Some time ago I got access to a 3D printer. After learning to use the Blender software I put together several decorative 3D models. Some are even printed.

Tiles for a (imperfect) Penrose tiling

The Kiss

A 3D self avoiding random walk

A pin for the MARS team

Map of Fagaras mountain chain between Negoiu and Moldovean peaks

Decorations to be glued on bathroom surface

Half a thinker

and others