I can't find details now, but I swear I read about someone (probably a university or such) building a Beowulf cluster out of a few thousand RPis, making their own supercomputer.
Myself, I still just want to make several networked little, mostly-autonomous, RPi BugBots that patrol my home and yard.
@nattiegoogie there are actually some pretty cool cases you can get for that. I've considered it some, but I ended up with a PC with a bunch of LXC containers instead.
Your bots sound cool!
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!