What side-hustle would you do just for the love of it?

This question has been on my mind lately. If you took the financial pressure away, what kind of side project would you pour your energy into simply because you enjoy the process? I’m a composer, so my brain is wired for patterns and solving musical puzzles. I think I’d probably dive into something like designing escape rooms or crafting intricate treasure hunts for friends. There’s something deeply satisfying about building a layered experience for others to figure out. What about you? What passion or interest would you turn into a hustle, just for the fun of the grind?