Gift Cube is a fully functional Rubik's Cube with a spherical cavity inside. When solved, one layer comes off and the content can be removed from the cube.
Watch the YouTube video
http://www.youtube.com/watch?v=b-9G7hCBHS8
Read at the Shapeways Forum
http://www.shapeways.com/forum/index.php?t=msg&th=2613&start=0&S=7a202919ad285e080a65bb16bce85449
Read more at the Twisty Puzzles Forum
http://twistypuzzles.com/forum/viewtopic.php?f=15&p=212929
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