I’m using an old Asus netbook as a home server. I installed Xubuntu and now I use it as a Docker host for Plex, a torrent server, and other projects. It works surprisingly well!
+1 for Mastodon. It's pleasantly weird and small. I very much enjoy the instance(s) I'm on. Check out joinmastodon.org to find one that suits your interests and needs!
I really wanted a t-shirt that said "Ladies Love Cool JPEGs" so I made it, and made a quick website to sell them. Here's the website in case you also like 90s hip hop references mixed with image formats: https://ladieslove.cool/
Although if you need to route it to an external (non-browser) output, you might consider using OSC. There appear to be multiple implementations, but here's one: https://github.com/marmorkuchen-net/osc-js
I'm still reading above the level I currently understand when talking about FPGAs and chips and such… but how does Bunnie's Novena[1] factor in to all this?
Personally, I really enjoy the automatic sleep/activity tracking that my Pebble provides (via Misfit app)
Besides that, I mainly use it for "watch" stuff.
That said, it is really nice to be able to get notifications without taking my phone out in certain contexts—bicycling, walking, in a pool, phone charging in other room, etc.