Reddit mentions of Mr. Pen Graph Paper, Grid Paper, 4x4 (4 Squares per inch), 17"x11", 22 Sheet

INVESTIGATING...

1. With newbies, I make it ultra obvious until they get used to looking around. First I make sure to be clear in my descriptions. I also really push passive perception. I will share that they notice things around them. Whatever makes sense in context that might give an indication they should look around more closely. If that doesn't get them biting them I simply ask "Do you want to look around more carefully?" Then if they say yes I ask them to roll an investigation check. Newbies frequently need to be given more obvious prompts until they get used to operating more independently.
   
2. If they are veteran players I usually don't have to do the above. I let them make their choices but I make sure I am really clearly describing the area.
   
   MAPS...
   
   
3. I do not rely heavily on actual maps unless there is a tactical reason they need one. I use Theater of the Mind. As long as I am describing things well, it can actually enhance play since everyone has a clear picture in their head of a 3 dimensional space instead of a flat map.
   
4. I rarely ever draw a map while in game. It takes too much time. When I do need a map, if the space is complicated enough that I actually feel the players need a map, then I need time to draw it accurately anyway. If the space is something like a 20x20 room with nothing in it but the PCs and the bad guys then I don't usually need a map.
   
5. I also hate spending hours and hours on maps when my players may never even go to the whatever I am mapping. Therefore I use a hybrid of things to provide a map when it is necessary, but almost always prepped ahead of time.I don't always draw the map, though. I sometimes rely on other resources. Examples below:
   
   

• I sometimes use these: https://www.amazon.com/Dungeons-Dragons-Tactical-Reincarnated-Accessory/dp/0786966793/ref=sr_1_6?keywords=grids+dnd&qid=1571626033&sr=8-6
  
• and these https://www.amazon.com/DUNGEON-TILES-REINCARNATED-WILDERNESS/dp/0786966319/ref=sr_1_11?keywords=grids+dnd&qid=1571626069&sr=8-11 upon occasion.
  
• I also bought this and use this for larger maps. I create them then save them for reuse/retasking later. https://www.amazon.com/gp/product/B07RGYL979/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 I only buy it when it is on sale.
  
• I do have erasable battle grids but I ended up rarely using them. If I am putting in the effort to create the map I would like it to be in a format for reuse/retasking later on. And what if the players come back through the area? Having to draw the thing again seems a waste of energy. That's just my preference.
  
• There are also generic maps available for all kinds of settings for very little cost on the Dungeon Master's Guild website. Tons of options. Many look quite professional. Sometimes I use those if they fit with my needs. Example selected at random: https://www.dmsguild.com/product/190205/A-Dozen-Maps
  
• Along with the above, frequently there are really nice looking maps available for specific official modules. I don't believe there are any for Dragon of Ice Spire peak but I know there are many offerings for other modules. Some are really, really good.