Beetleblocks, finally a reason to get a 3D printer

Somehow I came across Beetleblocks, which is a "graphical blocks-based programming environment for 3D design and fabrication. Use code to control a beetle that can place 3D shapes and extrude its path as a tube. Then make a 3D print!"

It makes building 3D designs fun and "not so hard"

I really liked Jacklyn + Patrick's idea for creating your own modular jigsaw puzzle like pieces.  This picture is my first attempt. Plus some other attempts.