Bram's Shuffle is a twisty puzzle invented by Bram Cohen. It has seven pillowed tetrahedrons that slide around inside a pillowed octahedron. The object is to scramble the puzzle and solve it again. All the tetrahedrons have six degrees of freedom, as they can fully change position and orientation. This makes the puzzle hard and confusion to solve. Related puzzles are Bram's Black Hole and Bram's Rocket.
Please order a 3D-printed do-it-yourself puzzle kit from Shapeways at this page (check with Oskar about screws and stickers), or contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.