Since I couldn't find anything I liked better online, I made these. These are for my Samsung Galaxy Note 4 8" tablets, but can be made for any size display. I used fiberglass sheet that is about 0.030" thick and very rigid. The pieces are held together by fiberglass tape so as to make them hinged for flat storage. They hold their shape and to my tablets using velcro, so no magnets are used. I put small pieces of the "fuzz" velcro on my tablets so it doesn't catch on their storage sleeves. I've made them 6" deep and 7" deep, but the 6" seems to be the better size. I painted them with flat grey on the outside and flat black on the inside. Works great! Also, the 6" size fits between the foam and the outside of the Inspire suitcase!