This

jerk off my dingus

I'm doing it right now.

Cross stitch. I never would have guessed how much I would enjoy it, but ever since I did my first pattern around a year ago I've been hooked lol

I like to think about what to do when I finally move to Belgium.

Free time?

Teaching programming for kids, 3D printing, photography, playing the saxophone, gaming (pretty much exclusively coop), playing board games.

Gaming, programming, gamedev, boardgames, drinking beer, producing music, running, watching F1, and more. Problem is that I often lack the time and energy for the more productive hobbies. At least I got myself to run a fairly consistent 2 days a week. I don't really understand how people can be bored, there's so much to do.

Build stuff. Either physical things like legos, puzzles, etc, or software.

I'm basic. I listen to music, watch videos, and play video games. One of the only non-basic things I do is go on Fridays to a Japanese club at my college since I don't have classes Friday.

Prep for tabletop RPGs - Sometimes thats making maps, other times designing vignettes and encounters, and when I'm feeling a need to recharge the ol' fiction engine, experiencing thematically similar media to just wholesale steal ideas from.

just picked up embroidery and knitting, been lots of fun making things for myself and i know what my friends are getting for next christmas lol

Drink wine