Video games, specifically Guild Wars 2.
Reading college-level or graduate-level math, physics, astronomy, programming, data science or analysis, other sciences, or other engineering.
Reading sci-fi and fantasy.
Watching TV with my parents, whatever we all agree on.
Watching reality shows where people compete to make the best or most creative craft, especially baking shows.
Baking, although I haven't tried making bread yet and I haven't figured out how to pipe frosting yet.
I am just beginning a programming and data analysis project involving LIGO open data.
Duolingo. I am studying Danish and German for my partner, Spanish for my friends, French because I already knew some, chess because I know someone learning it, math because I'm bored and I thought I would see how they teach it, and in theory I should also study Turkish, Arabic, and Chinese for family. To be honest, if I were a linguistic genius, which, believe me, I am very much not, I should also add Korean for family. As it is, I am mixing up Spanish, German, and French, and I speak Danish badly. Well, at least Danish is my partner's first language.