Writing, honestly. I get absorbed into stringing words into entire worlds, complete with flowery descriptions and characters of my choosing. I find that I can write anywhere, be it on laptop or paper, so it affords me more movement than programming.

It's not that I want something more creative than programming, I consider programming to be equal parts art and skill. I want something more flexible, not tied to a company that requires me to work in ways that I don't find productive (looking at you stand ups). However, for now I'll be following the money and writing on the side, although it does get draining to split most of my day's effort into two creative professions.