While sitting at the kitchen table my tablet is at a very low angle to me, but the lights reflect off the screen if it's not propped up a little. I was tired of putting the salt shaker under the top to hold it up, so I made this little wedge to hold it instead.

Mostly just playing with shapes in TinkerCAD, but it ended up like this - prints cleanly without supports. Rubberized no-slip tape on the bottom helps hold it in place.

UPDATE: I've made a round version as well! It's a bit longer but the wider point makes it much more stable.
 

Print Settings

Printer: Bambu Lab X1 Carbon

Supports: No

Resolution: .2

Infill: 20% Cubic Support

Filament: Hatchbox PLA Medium Wood