This is a variation of my previous design (http://www.thingiverse.com/thing:1356310). This one has an even more minimalist vibe to it. Two or more of these will nest/stack with each other to take up a very small footprint when traveling.

There are hundreds of tablet stand designs out there, yet none I found met my particular needs: it had to travel flat, and accommodate a ~15.5mm-thick tablet (including case). Works for smartphones, too. Requires no additional assembly.

I added foam pads where the back support touches the tablet's back. This is optional.