this is my collection so far... :)
A mass produced 2x2x2 by Verdes. Sold in traditional and pillowed shape and with back and white body.
25th anniversary cube
Puzzle made for the 25th anniversary of the cube.
Good for speedcubing after lubricating.
Rubik's Studio 4x4x4
The new retooled version of Rubik's Revenge produced in Hungary by Rubik's Studio.
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.
A 3x3x4 with two layers removed but not hidden.
This is a newer version of the Megaminx, published by Meffert, with tiles and 12 distinct colours.