just a quick idea for a cheep (Free) tablet stand. i made it out of cardboard and duck tape how redneck can you get?
* cardboard box
*and a pencil
a couple notes::
1. i didn't take a pic of it but in my first one i added a small triangle of cardboard to the back inside of the base, it added stability but losses the ability to fold. better if its being left on a desk. but not necessary if you are making this to travel
2. it lost a lot of stability / rigidity from cutting and reattaching the center. i would add a "spine" if i make another travel one. a third piece; about a half to quarter inch of cardboard added to the center when taping the two half's
3. the bottom needs to be at-least one inch thick for strength; or maybe go wider instead of taller; by adding two or more side by side. i didn't try this because i was making a second one for travel