A collection depicting my preferred list of cubes for first timers.
A 3x3x3 with innovatively restricted movements.
A cube covered with sudoku-themed stickers.
CUBE (SHAPE PRESERVING)
A variation on the Helicopter Cube that uses curved cuts to reveal the otherwise hidden centerpieces.
The deepcut corner turning cube.
CUBE (SHAPE CHANGING)
The Bump Cube is a simple 3x3x3 Rubik's cube, but with an interesting twist. It spawned a whole series of puzzles and created a verb of its own.
Sticker mod for Megaminx what visualize the orientation of the center pieces (Super cube)