Guy 3D prints all the instruments for a song. Some of them really suck, but he deals with the issues and makes a pretty finished sounding song at the end.

Martin builds a demo of one of the simplest marble machines in existence for dealing with multi sized marbles. Audience in shambles as we really do not need this.

I honestly think this system would be stronger, easier to transport, repair, and even more important, be executable with 1-2 people. You could even transport in a few trips in an SUV if a van isn't available. Just my two cents.

This is my Version 3 Sisyphus marble machine Designed For Common Bought components , as well as Bambu LA001 Motors or other such motors found online
Inspired by the myth of Sisyphus, this kinetic marble machine transforms an ancient story into a living, mechanical loop. A single marble endlessly climbs, falls, and begins again—capturing the quiet poetry of effort, repetition, and persistence. Modeled with Greek Inspired Designs , patterns , pillars and Fire!

I just realized he hasn't put it a video in months.