3D printing is where I get to turn whatever is stuck in my head into something I can actually hold. I make fidget toys, shiny little objects in silk PLA, parts for Halloween builds, and prototypes for whatever project I happen to be working on next.
It also gives me a reason to keep improving my 3D modeling and design skills. I can go from an idea, to CAD, to a physical object, find everything I got wrong, change it, and print another one.
And because watching something slowly materialize layer by layer is strangely satisfying, a lot of it ends up becoming social media content too.