Perez' TetrahedronNot Apollo's Tetrahedron but Perez's Tetrahedron. It was made from a 3x3x3 instead a skewb.
Petrus CubeA 3x3x3 plus three 1x2x2-blocks that return on their own.
Philae lander 2x2x2A customly printed model of the Philae lander which was part of the Rosetta probe.
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