I just bought a 3D pen. For those of you who don't know what that is or how it works, it's sort of like a hot glue-gun; you load plastic filament (sort of like a plastic twine) into the back of the pen where it gets super heated and released through the nozzle and you can create 3D plastic objects with it.
I'm gonna need a little time to get some practice but if I get the hang of it, I might start taking 3D commissions.