Tri-Angle Tablet Stand

All the tablet stands I saw on Thingiverse seemed to be to small or to complicated. My son has several tablets in the 10" range, and he wanted to be able to stand them at different angles on his desk (for reasons unknown).

This is my FIRST build from my own design. After I made the first one (well, actually three ...), he tested it/them. He suggested a small lip at the end of the "toggles" to grab the bottom edge. One of his tablets is pretty thin, one kinda thick. I made the lip for the