The Wobbler

A few years ago in college a professor had a pretty cool desk toy that has apparently been discontinued. It looks kind of funky but the center of gravity stays at about the same level as it rolls. I decided you should be able to do a 3d print of it!

Model: http://engy.us/misc/wobbler.stl
Blender Python script used to generate: http://engy.us/misc/wobbler.py

Video of it in motion: http://www.youtube.com/watch?v=5-jIQGCt1Bo