Reddit mentions: The best magnetic tape
We found 75 Reddit comments discussing the best magnetic tape. We ran sentiment analysis on each of these comments to determine how redditors feel about different products. We found 29 products and ranked them based on the amount of positive reactions they received. Here are the top 20.
1. Corneria 10 Magnetic Sheets Adhesive 20 Mil Magnet
- Easy Cutting to any size. Peel&stick, Make anything magnet easily.
- 20Mil Thickness in Real Corneria Product, 10 Pack Per Bag
- Strong Magnetic For Fridge, Cars, Doors, Iron Surface. Great Adhesive Side to Sticking.
- Cuttable Magnetic Sheets For Artworks, DIY, PHOTO, Schedule & Similar Using
- Safe Material for kids, Environmentally friendly.
Features:
Specs:
Height | 0.5 Inches |
Length | 11.5 Inches |
Weight | 2.20462262 Pounds |
Width | 8.5 Inches |
Size | 10 Magnetic Sheets(8 x 10 inches) |
2. 10 Adhesive Magnetic Sheets - 8.5" x 11" - 20 mil Magnet - Peel & Stick
- 8.5" x 11" adhesive magnets from Flexible Magnets
- 20 Mil Thick - Strong standard indoor adhesive.
- Very easy! Just peel back the protective paper and place your photo! Peel and stick!
- Perfect for photos, Crafts, Kids drawings, Perfect for photos, kids drawings, Save the Date, and much more!
- Sold as a pack of 10 adhesive sheets.
Features:
Specs:
Weight | 2.5 Pounds |
3. Flexible Magnetic Strip - 1/2 Inch x 10 Feet Magnetic Tape with Strong Self Adhesive - Perfect Magnetic Roll for Craft and DIY Projects - Sticky Anisotropic Magnets
- BRAND X-bet MAGNET is the first leader in the craft magnets niche. Our Bestsellers have 1000+ excellent reviews. Now we have launched our own Magnetic Tape after the numerous requests of our customers. Longtime tests proved high quality & strength of our Magnetic Sheet - Magnetic Tape.
- PREMIUM Quality Material with Long Lasting Anisotropic Magnet! Magnetic Roll: 1/2-Inch x 10 Feet.
- STRONG, DURABLE & FLEXIBLE Magnetic Strip with 675 Gauss - Ideal holding power. STRONG TESA ADHESIVE BACKING - Stronger than most brands out there!
- EASY TO CUT AND INSTALL magnetic stickers. Sticky magnet side does not leave any mark. Adhesive on one side, flexible magnet on the other - sticks great on plastic, metal, concrete, tiles and more. Can be used in totally different fields: Education, Science, Kitchen & House, Office, Building, Creativity & Craft and so on. Perfect for any DIY projects!
- We give FREE BONUS and 30 Days money back GUARANTEE.
Features:
Specs:
Height | 0.5 Inches |
Length | 3.5 Inches |
Weight | 0.4 Pounds |
Width | 3.5 Inches |
4. Magnet Valley 5 Magnetic Sheets of 8" x 10" Adhesive 60 mil Magnet Ultra Thick
8" x 10" adhesive magnetStrong standard indoor adhesive100% Made in USA60 mil in thickness - VERY THICKThis product is NOT printable. I repeat, this product is NOT printable! It has no printable surface and is much too thick for a printer.
Specs:
Height | 1.2 Inches |
Length | 11.7 Inches |
Weight | 3.05 Pounds |
Width | 9.4 Inches |
5. Magnum Magnetics Corp Adhesive Magnetic Strip, 1/2-Inch x 25-Feet
- The ultimate in refrigerator door decorating
- 25-foot roll of dark brown magnetic tape
- Make your kitchen or office instantly look tidy and clutter-free
- Sticky on one side and magnetic on the other
- Have fun with the kids making cards and other special items
Features:
Specs:
Color | Coconut |
Height | 5.61 Inches |
Length | 0.56 Inches |
Weight | 1.0802650838 Pounds |
Width | 5.61 Inches |
6. Master Magnetics Roll-N-Cut Flexible Magnetic Tape Refill - 1/16" Thick x 1/2" Wide x 15 feet. (1 roll), 07518
Magnet designed to hold on one side only directly to flat steel surface. Multiple Poles are evenly spread across its surface to prevent sliding. It does not hold well to other magnets.Magnet holds up to 6 pounds per linear foot on contact with flat, smooth ferrous steel, without layer of material be...
Specs:
Height | 5 Inches |
Length | 10 Inches |
Weight | 0.02 Pounds |
Width | 5 Inches |
Number of items | 1 |
7. Magnet Tape with Adhesive Backing - 70 Self Adhesive Magnets - Premium Magnetic Stickers for Teachers - Best Classroom Magnet Stickers - Craft Magnetic Tape - Sticky Magnets with Adhesive - Imanes
🧲 TEACHERS FAVORITE MAGNET TAPE! Creatively engage students using magnetic squares for flashcards or adhesive magnetic strip for decorations and classroom organization.🧲 DURABLE & FLEXIBLE! Better than a magnetic tape roll, our flat magnets with adhesive can be used as a magnetic strip, indivi...
8. Magnetic Tape, 15 Feet Magnet Tape Roll (1/2'' Wide x 15 ft Long), with 3M Strong Adhesive Backing. Perfect for DIY, Art Projects, whiteboards & Fridge Organization
- HIGH QUALITY MAGNET TAPE: Objects weighing up to 1.5 oz (~50 gram) can be held easily with a short strip. Add several or longer strips for heavier things.
- 3M STRONG ADHESIVE BACKING: Premium 3M adhesives are made for sticking quickly and firmly while last for a long time. Ideal for clean, smooth and uniform surfaces.
- 15 FEET MAGNET TAPE: Big Value packed into a strong zip bag for easy storage. Use short strips or for heavier items choose more strips to hold anything in place!
- EASY TO USE. Great for teachers, students, nurses, office workers, DIY thinkers, mothers, craft artisans and people who love to organize.
- ENDLESS POSSIBILITIES: Make your own bookmark, use them on whiteboard, organize things on fridge and many other things. Magnets are behind instead of on top of things for a clean and clutter less look. You can also put some small objects on them such as scissors, ruler, sharpener or anything light and metal
Features:
Specs:
Height | 0.51181 Inches |
Length | 7.874 Inches |
Width | 5.5118 Inches |
9. Magnet Valley 1" x 10' Dry Erase White Magnetic Strip Roll Write on/Wipe Off Magnet
dry erase20 mil in thickness100 Made in the USAwipes clean
10. Pangda Flexible Rubber Magnets Discs 3/4 Inch Round Magnetic Discs with Adhesive Backing, 100 Pieces
- Flexible adhesive rubber magnets: they are good small gadget to fix paper on the fridge, bulletin boards, white board, magnetic drawing board
- With adhesive tape: peel the sticker and press the adhesive tape to the crafts, then put the side without sticker on the metal material surface
- Size: about 3/ 4 inch diameter, very slim 1/ 16 inch in thickness; You can use several magnetic discs on the some things to enhance the magnetism
- Craft uses: you can trim some paper with small delicate patterns, such as plants, birds, flowers, snowflakes, butterflies, stick the adhesive side on the back of paper, then stick them on the metal things as ornaments
- Good for holding papers onto metal surface, like file cabinets or refrigerators; Note: they are only suitable for small lightweight things, don't use them to fix some heavy objects to avoid falling down
Features:
Specs:
Height | 0.06 Inches |
Length | 0.79 Inches |
Weight | 0.11 Pounds |
Width | 0.79 Inches |
11. Magnetic Tape Roll, 10-Foot Long, A Strong Flexible Magnet with 3M Adhesive Backing, Comes with A Folding Pair of Scissors, by Ventaja.
Magnetic strip roll holds a very powerful magnet and the 3M adhesive backing with a firm grip on the surface applying the magnetic linear too.Magnetic tape is easily cut with scissors to your ideal length. Then, just peel and stick.Strong and flexible magnet, the magnet is keepable of holding heavy ...
Specs:
Height | 0.79 Inches |
Length | 5.51 Inches |
Width | 2.36 Inches |
12. MagnaCard Magnet Tape .5 inches x 10 feet, in Poly Bag (MT10510P)
Magnetic TapeCraft Tape10' Tape Roll
Specs:
Color | Black |
Height | 1 Inches |
Length | 4 Inches |
Width | 5.5 Inches |
Number of items | 1 |
13. Magnet Valley 5 Magnetic Sheets of 8" x 10" Adhesive 20 mil Magnet
Made in USA
Specs:
Height | 25 Inches |
Length | 8 Inches |
Width | 10 Inches |
14. 105-Piece Flexible Magnetic Squares for Light Everyday Use; Strong Adhesive - Just Peel & Stick
- 105-piece flexible magnetic squares
- For light DIY, everyday use
- Strong adhesive backing: Sticks to all surfaces
- Peel & Stick: Easy to use
- Each square measures 0.8" x 0.8"
Features:
Specs:
Weight | 0.71 Pounds |
15. Master Magnetics Magnet Tape, One Side Adhesive Magnetic Tape, 1/16" Thick x 1" Wide x 10 Feet (1 roll), 07019
Magnet designed to hold on one side only directly to flat steel surface. Multiple Poles are evenly spread across its surface to prevent sliding. It does not hold well to other magnets.Magnet holds up to 12 pounds per linear foot on contact with flat, smooth ferrous steel, without layer of material b...
Specs:
Height | 3.899999996 Inches |
Length | 1.199999999 Inches |
Weight | 0.099999999916141 Pounds |
Width | 6.599999993 Inches |
Number of items | 1 |
16. Hygloss Products, Inc. Magnetic Tape, Self- Adhesive, 1/2-Inch x 300-Inch
- Self-adhesive magnet tape turns anything into a magnet
- Cut to size
- 300 inches per roll
Features:
Specs:
Height | 0.5 Inches |
Length | 5.75 Inches |
Weight | 1.15 Pounds |
Width | 5.75 Inches |
Release date | January 2020 |
Size | Length: 300-Inch |
Number of items | 1 |
17. XFasten Flexible Magnetic Tape, 1-Inch x 6-Foot
Excellent Weight Holding Capacity. Innovative adhesive roll with strong magnets that can hold up to 5 pounds of flat, metallic surfaces per linear feet of length.Versatile Applications. Perfect for holding objects such as dry erase boards, memo notes, calculator and bills on the refrigerator or any ...
Specs:
Height | 3.86 Inches |
Length | 3.86 Inches |
Weight | 0.55 Pounds |
Width | 1 Inches |
18. Quartet Magnetic Tape, 0.5 Inch x 7 Feet Roll, Dark Brown (MT17)
- Create magnetic visuals. Cut tape to size, peel backing and adhere to paper, cardboard or plastic. Stick magnetic side to metal surface.
- Organize and customize magnetic planning boards with numbers, letters, headings and symbols that are easily movable for quick updates.
- 7 Feet Roll
Features:
Specs:
Color | Dark Brown |
Height | 0.6 Inches |
Length | 5.5 Inches |
Width | 4.8 Inches |
Number of items | 1 |
19. Magnet Valley 25 Magnetic Sheets of 8" x 10" Adhesive 20 mil Magnet
Flexible MagnetMade in USA20 Mil thickgreat for photos, crafts or scrapbooking diesPeel and Stick
Specs:
Height | 10 Inches |
Length | 8.4 Inches |
Width | 0.7 Inches |
20. Magnetic Sheet Roll for Crafts, Signs, Display - Flexible 24" X 30" Magnet
- Flexible Magnet Roll measures 24" x 30" and is 15 mil thick for extra thickness
- PREMIUM QUALITY-- Magnet Roll is long lasting, strong & flexible with a magnetic face on one side and printable vinyl matte white on the other.
- EASY TO USE- Flexible magnetic sheet is easy to cut with a pair of scissors or a utility knife
- SO MANY USES- Cut into smaller pieces for a diy magnetic vent cover. Perfect to make refrigerator magnets, vehicle magnets, arts and crafts, magnet decal, business signs and more.
- Fast Free Shipping! 100% SATISFACTION GUARANTEED!
Features:
Specs:
Height | 24 Inches |
Length | 30 Inches |
Weight | 1 Pounds |
Width | 0.03 Inches |
🎓 Reddit experts on magnetic tape
The comments and opinions expressed on this page are written exclusively by redditors. To provide you with the most relevant data, we sourced opinions from the most knowledgeable Reddit users based the total number of upvotes and downvotes received across comments on subreddits where magnetic tape are discussed. For your reference and for the sake of transparency, here are the specialists whose opinions mattered the most in our ranking.
If you mean for stuff like stairs and slabs there is good magnetic tape
Magnetic Squares Flexible Craft Magnets - Magnet Sheet of 70 Strong Magnetic Tape Stickers - Double Sided Sticky Magnets for Crafts with 3M Adhesive Backing https://smile.amazon.com/dp/B0796MKVS8/ref=cm_sw_r_sms_apa_i_gV7rDbGPH18RG
Magnetic Tape, 15 Feet Magnet Tape Roll (1/2'' Wide x 15 ft Long), with 3M Strong Adhesive Backing. Perfect for DIY, Art Projects, whiteboards & Fridge Organization https://smile.amazon.com/dp/B07QKNZZ3J/ref=cm_sw_r_sms_apa_i_pW7rDbRZE5807
All the magnetic tape seems to be in half inch or inch width at a dollar a foot. With adhesive backing
Installing a WiFi thermostat has been helpful. I can monitor and change the temperature settings away from home, if I need to.
Steel storage racks in my laundry room with write-on magnetic labels. I use storage cubes and a dry-erase marker on the labels in case I ever want to change anything.
Phillips Hue lighting. I thought they looked cool before buying but was hesitant to buy because it's a little pricey and I figured it would just look cool and not really be useful. But being able to dim the lights, change to any color in separate rooms, and time the lights for being away or for bedtime has been very useful to me. There are a lot of options with these.
Edit: noticed and wanted to share a few more things as I walked around my house:
Humidifier, 1+ gallon capacity. Bought one from Target and set it in the dining area. Helps a lot with static shock with the dry air in the winter time.
Glass shelving (I shop a lot through Amazon.) on the side of the bathroom sink. Small bathroom with not a lot of space, so had to get creative.
And one sort of strange improvement: adopted a dog. I have a somewhat small house and a large yard in comparison to the neighborhood and house sq footage. I started to get resentful of my yard because it's a decent amount of upkeep and I didn't even really utilize it. Adopting the dog really made me appreciate the yard more; it's great that he has a lot of space to run around.
Thanks! I have ordered magnet sheets like these ones and they work great. Cheers!
I wonder if two strips of magnetic tape in the top hem would work for the opening. It's pretty flexible, but would stiffen up a bit when stuck together, and is probably easy to roll up. I have some at work. Might try it out tomorrow.
As far as sewing skill, it's just practice. Set up the next few inches of what you're about to sew, and feed it through smoothly at a constant speed. Use something as a visual guide, either the edge of the foot, or a mark on the machine, or a piece of masking tape with a measured line drawn for your seam allowance.
If you just want sewing practice without wasting a bunch of expensive fabric, you could probably use cheap blue tarps from the hardware store. If you don't want to be wasteful, make some reusable grocery bags or something? That's an easy project to practice design, construction, top stitching, rolled hems, and handles. (Tip: Make a U-Panel style bag with a single front/bottom/back panel, and two side panels.)
Yep! The Fredde desk, my best friend uses it as well. This is the link for the sheet magnets I ordered -
10 Magnetic Sheets of 8" x 10" Adhesive 20 mil Magnet https://www.amazon.com/dp/B003XNAHMC/ref=cm_sw_r_cp_api_1G2mzbEA12RZY
Hey, thanks all. The case is just a metal toolbox from home depot. (I think it's this: https://www.homedepot.com/p/Husky-20-in-Tread-Plate-Metal-Portable-Tool-Box-TB-520/202279042)
The base magnets are the cheap-o stick on magnets you can get on Amazon for pennies a piece (such as here: https://www.amazon.com/Flexible-Magnets-Magnetic-Adhesive-Backing/dp/B076DVBZTX).
​
I use solid resin bases from dragonforge.com (excellent), and just stick the stickers on the bottom (with a drop of super glue). I cut them to fit more on. But that's pretty much it.
I actually used magnetic sheets.
They have an adhesive side but I just stapled them to the wall using a thin caliber staple gun. To be honest I even cut those sheets in half and spaced them about a few inches apart. They are surprisingly strong and could hold more than 1 steelbook easily with half a sheet.
As stated in my other post, I've had this thing running for over a month at 75c with no loss of cohesion
I'll have to do some checking if I ever go above that I'm sure, but for PLA and PETG it's been perfect
Looks like, to have a higher Curie temperature, you'd want to use thicker 60mil sheets
Don't use double sided tape, it won't last long, and will leave a sticky mess behind.
Buy some good magnet tape like this, and cut it to be thin- so that the magnet a little thinner than the lights. might take a little experimenting to get the cutting thickness right, but when you do, it's perfect.
If the adhesive on the magnets doesn't hold well, a Plastic UV epoxy/glue like bondic will keep it there, permanantly.
What I would up getting was the following:
It is $12.99, and 14 ½x30 ¾. It will fit ten steelbooks, in the format I have shown, or horizontal.
8.5” X 11” sheets, you will get two steelbooks out of one sheet, with some left over; not enough to cover another steelbook though. You will have to cut out to size what you need.
These are 16lbs rated. I placed four on each side of it (top and bottom) and it’s holding well.
I will warn you, the board with the steelbooks is HEAVY.
https://imgur.com/gallery/x2bFz
This is one more photo to show how it looks.
Good luck man!
I wanted a way to display the awesome steelbook art without taking up a lot of room. I looked at display racks, but they were expensive and bulky. Then I got to thinking about magnets. I did a quick test with a fridge magnet and sure enough the cases are magnetic! I went to amazon and bought these!
https://www.amazon.com/dp/B004SOV4NQ/ref=cm_sw_r_cp_apa_xbQBxbMGK2891
Any craft store (Michael's, JoAnn, the dreaded Hobby Lobby, and probably even Lowe's or Home Depot for some things) will do as well as Amazon if you can wait a few days for shipping.
I've not made keyrings yet but for magnets you'll probably want some kind of magnetic tape like this:
http://www.amazon.com/Magnum-Magnetics-Corp-Adhesive-Magnetic/dp/B00114LU8K/ref=pd_sbs_indust_3?ie=UTF8&refRID=0F9T34N0C12XGK1T5QZ6
Or a magnetic sheet like this:
http://www.amazon.com/Flexible-Magnet-Adhesive-Length-rolled/dp/B005HY990G/ref=sr_1_1?s=arts-crafts&ie=UTF8&qid=1404232861&sr=1-1&keywords=magnet+sheet
The adhesives on those are usually kinda crappy so I'd suggest maybe pulling the tape off and adding your own adhesive of choice.
Also the flexible magnets tend not to be super strong so you might need to use a bit more than you would think.
It was super simple! I bought these magnet sticker sheets from Amazon — one of the reviewers said they used them for a magnetic palette and that the hold was strong enough: https://smile.amazon.com/gp/product/B00B2SE5KA/
Then I emptied out an old pencil case, and cut the magnet to be the right size. Pressed it into the bottom, and voila!
Well, I'm from Minnesota, and I got it from Ace Hardware. It's small and more local but not a mom and pop. Maybe order some? :)
That looks great. One thing I use on mine is a piece of stick on magentic strip along the edge of the top tier. I can tie a dozen flies, and cement all the heads at once. Plus, it keeps them from getting knocked around.
I used this, two strips on each about 2 inches long. Holding well so far! I used pretty much the entire roll for all of these.
I used something similar to this:
https://www.amazon.com/dp/B078SVG2CC/ref=cm_sw_r_cp_apa_i_uRWvDbFCCXECM
The magnets are 1/2 inch wide and I needed 1/4 inch so I cut it lengthwise whenever I needed it. Hope that helps!
That's a really cool idea! I'm guessing you used something like this (?):
https://www.amazon.com/gp/product/B00B2SE5KA/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1
Its a metal door :)
http://i.imgur.com/812ZmTg.jpg
I usually turn everything i make into a magnet with those sheets, they work really well, but they do tend to fall off when the perler warps a bit, so i use glue to make sure they stay on.
Yeah that's what I did with my Bernie bumper stickers. I ordered this one and it's still going strong 2 months later
https://smile.amazon.com/gp/product/B003XNAHMC/
I’ve been obsessed with eye shadow singles lately (thanks Colourpop) and have been assembling left overs from half-empty pallets. I purchased a set of two pencil holders off Amazon (about $10 for two) and some self-adhesive magnetic squares ($6) and viola! Easy way to create a slim and sleek travel palette or to put together a single color story.
https://www.amazon.com/gp/aw/d/B07882HDFZ
https://www.amazon.com/gp/aw/d/B075FFZFPT
I suppose you could remove the packaging between the shades (after removing them). Then gluing down or using magnetic stickers. I think it would make a beautiful custom palette.
You could use these:
https://www.amazon.com/10-Adhesive-Magnetic-Sheets-Magnet/dp/B004SOV4NQ
here is one type at Amazon, there are others.
The stuff I have seems to alternate poles every few millimetres along the length so shouldn't repel unless you need to be super picky about position.
What about magnets? Stick a small one in the bottom of each hex and on the base, lay strips of magnetic tape on a sheet of MDF or foam core or whatever you want to use as a base. MDF might be better because you could use a router to make tracks for the magnetic tape so that the surface is flush.
i wasn't too worried about getting the glue off the back of the pots because i intended to glue magnets to the back anyway. there's all sorts of stuff you can use other than z palettes, have fun with it.
eta: this is what i used https://www.amazon.com/dp/B005HYDC68/ref=cm_sw_r_cp_api_YxcXzbYWBGWEK
So far I've had luck with using squares I've cut from Adhesive Magnetized Sheets to hold plastic infantry to my metal-bottomed toolkit. I add a spot of white glue to help out the magnetic sheet adhesive.
sheets: https://www.amazon.com/gp/product/B004SOV4NQ/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
It's really easy and inexpensive to make them. Check this out. Instead of sewing them, I used 3M Weatherstrip Adhesive and magnetic strips.
I've bought sticky Magnetic Squares
https://www.amazon.com/gp/product/B0796MKVS8/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
and now my trifecta on the fridge :)
How much clearance do you need?
You can use magnetic tape to secure the glass panel to the case. The tape I linked is 2mm thick so you can get additional 4mm by using this tape on the glass and the case. It likely wouldn't be as secure as the original mounting mechanism. but it should be fine if you are not moving the case around.
This is what I use. You can buy it at pretty much any office supply store, hobby lobby, wal-mart, etc. https://www.amazon.com/10-Adhesive-Magnetic-Sheets-Magnet/dp/B004SOV4NQ
adhesive backed magnetic sheets, a straight edge, and x-acto knife are all you really need.
if you have a cutting mat or a paper trimmer, it's a bit easier to keep them square.
You can get flat magnetic tape, that might work? Or something like this https://www.amazon.com/Magnetic-Sheets-Adhesive-mil-Magnet/dp/B003XNAHMC/ref=sr_1_16?ie=UTF8&qid=1497610008&sr=8-16&keywords=magnetic+tape
Two words: "magnetic tape". Comes pre-glued my friend. Only trouble is that it comes in rolls usually, so you might pre-cut and flatten with some heavy books. Not all tape is created equal either. The thicker the magnet the better the staying power. I got some flimsy 3m tape at Walmart in a pinch once and it wouldn't even hold up tiny 1" foam squares.
I can't find the listing I usually get, but this is really close to it.
https://www.amazon.com/XFasten-Flexible-Magnetic-1-Inch-6-Foot/dp/B01M095WT6/ref=alp_dpwidget_a_m_?th=1&psc=1&smid=A1S57KNZPNGJP4
> Glue on a magnet
That's what I was thinking. Look at this and see if it might work. Should be easy to remove when you leave.
I used to make vent shaped frames out of rolls of magnet tape, and use layers of dryer sheets between two framed magnet squares. I still make one when I travel to throw over hotel vents. Looked about the size of a License pate, just slap them on a vent it sticks to the metal and seals well. http://www.amazon.com/Quartet-Magnetic-Tape-Brown-MT17/dp/B001E69Z14
FYI here's 10 sheets for $12.70 or 25 sheets for slightly less ... just in case you're looking
another option is magnetic sheets, something like this https://www.amazon.ca/Magnetic-Sheet-Crafts-Signs-Display/dp/B0055D7NO8
Please do. Everyone should know magnetic sheets
Magnetize them; buy a kit for doing so from Amazon...that and a metal used lap desk or playing card surface and you're on your way
Two decks of taro cards, some glue, scissors and patience and you should be able make a magnetic "tarot sandwich", albeit, ending up with a thicker card...
https://www.amazon.com/10-Adhesive-Magnetic-Sheets-Magnet/product-reviews/B004SOV4NQ
I've been looking for shelves, Magnetic strips for tools, and finally saw the post with the gaming steelbooks and the OP provided a link to these sheets on Amazon.
Magnetic Sheets
This might work. But IDK how easily you could remove it in the future
So, just realized my niece makes custom fridge magnets out of magnetic sheets, and magnetic tape,
https://www.amazon.com/10-Adhesive-Magnetic-Sheets-Magnet/dp/B004SOV4NQ/ref=pd_cp_201_2?_encoding=UTF8&pd_rd_i=B004SOV4NQ&pd_rd_r=f4a40075-bdbc-11e8-baee-c185d6b5ce16&pd_rd_w=vIPx7&pd_rd_wg=y9Rti&pf_rd_i=desktop-dp-sims&pf_rd_m=ATVPDKIKX0DER&pf_rd_p=3f5155f5-5438-4fc3-ab83-bf013cfc8883&pf_rd_r=32XQYT4WA504599VFQBE&pf_rd_s=desktop-dp-sims&pf_rd_t=40701&psc=1&refRID=32XQYT4WA504599VFQBE
could probably buy sheets and use that to make your own magnetic backing.
https://www.amazon.com/dp/B004SOV4NQ/ref=cm_sw_r_cp_apa_2SSBxbMC2ZTA0
http://www.amazon.com/dp/B0035YAVIY/
The sticky side hasn't proven to work all that well...
10 Adhesive Magnetic Sheets - 8.5" x 11" - 20 mil Magnet - Peel & Stick https://www.amazon.com/dp/B004SOV4NQ/ref=cm_sw_r_cp_apa_i_hSG8AbHTNXW9T
https://www.amazon.com/dp/B004SOV4NQ/ref=cm_sw_r_cp_apa_2SSBxbMC2ZTA0
$6.99 for 3 sheets of 8x15:
8 * 15 * 3 / 7 = 51 sq.in. per dollar.
$8.39 for 5 sheets of 8.5x11 inch magnet paper:
8.5 * 11 * 5 / 8 = 55 sq.in. per dollar
This can even get you up to 57 in^2 / $
maybe this? https://www.amazon.com/10-Adhesive-Magnetic-Sheets-Magnet/dp/B004SOV4NQ
https://www.amazon.com/dp/B004SOV4NQ/
I got it on Amazon.com, as a roll of magnetic tape. I had to cut it up into appropriate length pieces, then lay it out flat and put some heavy books on it to get it to stop trying to roll back up. And then it still tried to, so I keep the sheets stored face-down when I'm not using them, and that's gotten it to flatten out better.
Here's the link to the specific magnetic tape I bought:
https://www.amazon.com/gp/product/B005HYDC68
Amazon has them available, I use these:
https://www.amazon.com/gp/product/B00B2SE5KA/
60mm thickness is the key, and can cut it using a standard hobby knife.
That's no problem. They also make thin magnetic sheets so you can just place them on the wall, this is how im planning on hanging them. Here's the link on amazon if interested. https://www.amazon.com/gp/product/B004SOV4NQ/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Maybe use adhesive magnetic tape? The reviews say that the hold generally sucks, but that doesn't matter if you're using rare earth magnets on the headphones rather than just a plate of non-magnetic steel.
https://www.amazon.com/gp/product/B004SOV4NQ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
I used those sheets and cut them into 4 evenly pieces. They're adhesive magnetic sheets so 1 side you use to stick on the wall, and the other side you stick the steel books to.
I used some extra tape to prevent the adhesive tape to fall off due to the weight of the steel books. The magnets themselves are very strong so it really holds them in place.
EDIT: If you need visual aids, I live streamed the entire process minus me cutting the sheets into pieces:
https://www.twitch.tv/videos/498237626
Once in a while you can see the adhesive fail due to the weight of the steel books hence the use of tape for reinforcement.