Minimal Arduino Useless Machine M3
Just LOVE the original thing: https://www.thingiverse.com/thing:4561617
But i´m usually into threaded inserts, but only when i need them.
For this usage i don´t think inserts is needed so i remade the "body" to use M3 bolts just threaded by themself, and a version where you use the screws that come with seratain servos.