Hmmm not much comes to mind.
@czyskows had made some robots, but I thought they were using ultrasound (I may be wrong). see here: https://colinzyskowski.com/?page_id=1040 ...
We made a "game" for a hackathon where we were extracting pitch and loudness with
aubio to control a character on screen.
There was also someone using Bela on drones, but I don't think they published anything.