Came here to say this. Have been using the EFF stickers for years and everyone always asks about them vs the kludgey plastic ones everyone wedges in there that Apple is making note of. I've used them in the past on my phones as well, but given the advent of multiple front facing cameras this has become more of a pain. I purchased some of this sticker material a while ago with the intent to try and laser cut some specific designs. This was a good reminder!
What type of material is it exactly? I want to source some for myself but don't know what type of sticker will be "ultra-removeable" and reusable.