The Magic Wedge

The most useful print I've designed - but also a simple one that took me five minutes in Blender.

This is a triangular prop with notches randomly placed on each side. The uneven sides & notches let you prop up a laptop, smartphone, tablet w/ keyboard - whatever you like. I've used it to fix a seat on a stationary bike and to prop up an iPad Pro w/ keyboard so it's at a more readable angle.