3D cubex 013 (Geodesix)A 2x2x2 designed like a surrealistic head with jug ears and a highly geometric spherical body.
4-colour Sudoku 2x2x2An easily sticker-mod or tile-swap for a 2x2x2 cube that creates a more complex 4-colour Sudoku 2x2x2
4D8A 2x2x2 with tips on each piece. These tips are trivial but solving the whole puzzle is not.
AkunamoniA 2x2x2 transformed into the Akunamoni, the virtual weapon of the protagonist of the manga "gomugomunomi".
Alek.SoSimplicity rules! This is probably the simplest but still working mechanism for a 2x2x2: Eight unconnected pieces in a cage.
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