By far one of the most useful printed tools I've used is karakulli's miniatures painting handle. I originally modified it a little, so the bottom isn't so narrow, making it less susceptible to getting knocked over.
It still gets knocked over.
So I designed a wall mount so I could save space, still have my miniature that I'm working on, and prevent it from getting knocked over.

Designed for karakulli's painting handle, but I suppose it should work for any of them with some tinkering.
https://www.thingiverse.com/thing:2805001