What I Do
I make 3D models in Blender and 3D print them.
In particular I make (NSFW):
Action figures
fantasy themed pin up, inspired by tabletop games or videogames
Tabletop minis
both minis of character and terrain settings.
Mostly for fantasy tabletop games like D&D.
Small gadget like keychains or small things to put on the desktop.
To see the SFW works you can go to Fede3DWorkshop.com