I made a DIY eurorack module using 3 arcade switches to trigger gates. Check it out:

The Radio Music by Music Thing Modular is a awesome eurorack module that uses a Teensy to play back sample files from an SD card with/out CV.  It's awesome.

I wanted to build out my own sample pack by extracting audio from a set of video files, and built a tool to help do that.  Maybe you're into this stuff and want to check it out too? Here's the source on github:

https://github.com/breedx2/mtm_radio_extractilizer