CUBE (SHAPE PRESERVING)
a dollar store 3x3x3 with extended pieces (not fully-functional)
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.
This is a newer version of the Megaminx, published by Meffert, with tiles and 12 distinct colors.
Starting with all six balls inside the center sphere and the locking rings open, the challenge is to move the balls into their matching coloured domes on the outside.