I revisited an old hobby, emulating niche systems. I got an Acorn emulator with Risc OS 5 and some development tools, and I wrote a snake game in BBC BASIC and a calculator in pure ARM assembly, both of which are new to me. It was a blast.

I'm really into calligraphy and snowboarding. Luckily there's a snowboarding presence here on lemmy, but I have not the time to start a calligraphy one.

I guess blacksmithing would be considered niche? Not doing it very regular. But once every view months.

Brickfilming! I make films with Lego using stop motion animation. Takes a lot of patience and my perfectionism is my worst enemy, but it's super rewarding, and there's a really cool community online around it. And yes, my profile picture is from my most recent Brickfilm!

Code golf on the cgcc stack exchange. I don't do it too often, but the community is pretty small and when I see a good one I can't stop thinking about it.

Sing in chamber choirs

English change bell ringing

Yarn dyeing started as a hobby and turned into my job quite quickly :)

It's fun and satisfying to see the colours evolve on yarn and how the colours act differently depending on the fibre blend you're dyeing.

I collect plushies/stuffed animals (to the point where I'm running out of room for more) and I've played Tabletop RPG games like Pathfinder, Shadowrun and GURPS for a good few years.