Buy at http://www.shapeways.com/model/31121/bram_s_cube.html
Copyright (c) 2009, Bram Cohen & Oskar van Deventer.
Bram's Cube is an idea by Bram Cohen to add eight gears to a 2x2x2 Rubik's Cube. When the top is turned by a quarter, the gears turn by one eight. For solving this puzzle, not only the 2x2x2 has to be turned to its correct position, but also the gears. This gives a classical puzzle a whole new dimension.