Tangled Cube
A cube wrapped around a torus moves in mysterious ways.
Based on this pipe cleaner model by Hyperqbert:
https://www.instagram.com/p/BGGKnvKOh-Q/?taken-by=hyperqbert
More info on tangled cubes: http://people.physics.anu.edu.au/~sth110/Tangled_Cubes_ActaCryst.pdf
Available on Shapeways:
http://shpws.me/MhLB