Reddit mentions of BalanceFrom Puzzle Exercise Mat with EVA Foam Interlocking Tiles, Black, 144 sq. ft.

Carpet may be inexpensive but IMO it has got to be the worst material for lining bird cages.

It may be on the pricey side but I would look into ordering puzzle mat. This one I linked to is about .80/sf and there are smaller packages (24sf) for not much more. I've used this for years for my hawks -- it pressure washes clean extremely fast and talons will not get dull from landing on it. They last a good long time as well.

There is a liquid called Poop-off which seems to be pretty good for breaking down raptor feces. But it too is pretty expensive at ~$40/gal.

The kind that everyone hates :) But they are only 1/2" thick and I need all the room I can get since the ceilings are just over 8 feet and I'm 6'5". You can get them on Amazon

Ahh I can help with the armor definitely ^^ but as for the dye, just be VERY careful what kind your using, dye will fade given time, the longer you leave the outfit in dye, the darker it will be, this is ideal to making sure the color last and fades out correctly with time. When dying it I'd suggest using like a bucket from home depot to dye it uniformly and then hang it out to dry after its sat and absorbed for the time you deem needed (again longer is definitely better) if it's very sunny out when you go to dry it, it can lighten the color up, if you don't want that hang it over the shower. That can stain tile tho so that's the trade off. Be careful on that end.
As for armor the best movable bet I can make is foam. Having a heat gun and craft foam for quick light armor, if your more willing to work with a knife I'd suggest foam mats that I will link below, they make much more of a flair kind of statement, bigger and more durable but harder to work with to start. For attaching armor, I'd use Velcro. Don't glue anything on your body suit, it'll be hard to clean and it might be a one time thing if you do, if anything just hot glue the Velcro on to attack shoulder pads or knee pads and then have a strap on the item itself for more support after the fact. If you have anymore questions you need me for back and fourth real time things as your working my cosplay Instagram is @shoe_icky_sucky_hara :) hope this helps!!

https://www.amazon.com/BalanceFrom-Puzzle-Exercise-Interlocking-Tiles/dp/B01IDRWPG8/ref=mp_s_a_1_3?ie=UTF8&qid=1550438515&sr=8-3&pi=AC_SX236_SY340_FMwebp_QL65&keywords=foam+mats&dpPl=1&dpID=51IuRBZT1uL&ref=plSrch

Don't worry about it. My OG Touch controllers are absolutely covered in paint marks like that from my walls, ceilings, etc. They still work perfectly fine.

If you want some tips for how to avoid that in the future though (even if the controllers don't get damaged, often your hands or other objects will) I'd suggest drawing a more conservative guardian boundary so you get warned earlier if you're close to it. Ideally you want it a full arm's length away from any obstacles so the pass-through mode will activate before you hit anything.

If you don't have enough room for a boundary that conservative, what works even better is a floor mat, like this: https://www.amazon.com/BalanceFrom-Puzzle-Exercise-Interlocking-Tiles/dp/B01IDRWPG8/ When you feel yourself step off the mat, you can remind yourself to stop and recenter yourself.