Please excuse the shameless self-promotion
Talos is passive clockwork electroacoustic module for eurorack synthesizers, featuring a wind up toy motor connected to a piezo. The motor drives a small cog on the front of the module that can then drive… well… anything you come up with.
The piezo works best with a preamp, but most systems will have something that can amplify the module.
The cog can be connected to other cogs; it’s lego-compatible.
Here’s a demo video:
And here’s a link to my website where a very limited run is currently available for purchase: