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Openable hollow puzzle
Bank SphereA hollow spherical 3x3x3 that can be openede in solved state.
Gift CapsuleA shape variant of the Turn Apart.
Gift Cube / Treasure ChestA cube which is hollow and can be opened when solved.

Gift PyramidThe concept of the Gift Cube applied to the Pyraminx.
Hinged Gift CubeA variant of Oskar van Deventer's original Gift Cube with hinges.
Hinged Treasure ChestA mass produced Treasure Chest with four pieces replaced. The result resembles the Hinged Gift Cube without being identical.

Peekaboo CubeA holey Treasure Chest with a scrambled Micro Rubik's Cube inside. The cube is much larger than the holes. A stand is attached to one edge piece.
Rubik's SafeIt looks like a 5x5x5 but is a 1x1x5. A poor man's Treasure Chest.
Rubiks BankA hollow 3x3x3 which can be used as savings box.

Treasure MinxThe concept of the Treasure Chest applied to a megaminx.
Treasure SkewbThe concept of the Treasure Chest adapted to a Skewb.

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