I build weird experimental instruments and then play them at the local electronic music open mic nights.
My main instrument is the electroduochord, a stereo two-stringed instrument played with a drone motor rotary magnetic bow.
https://youtu.be/G1ftvw-Y6pk
I've also hooked up audio jacks to small solar panels to convert vibrations in light into sound.
https://youtu.be/ZF2Rn5YfBC8
Yup, I've seen some of their stuff. They mostly make conventional music with unconventional instruments which is cute but doesn't quite interest me. I prefer music that is a bit more experimental and works with the texture of the sound more than melodic structure.
Have you heard of electronicos fantasticos? It's this band from Japan who make incredible music with instruments they made themselves.
https://www.youtube.com/watch?v=A0VYsiMtrNE