I've been slowly collection as any different puzzles as I can over the years. This collection is more so for me than anyone else, but regardless here is what I have.
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.
6X6X6 & UP
The first mass produced 6x6x6. A six layered cube.
The first 7x7x7. A seven layered cube.
CUBE (SHAPE PRESERVING)
A variation on the Helicopter Cube that uses curved cuts to reveal the otherwise hidden centerpieces.
A corner-turning hexahedron. Very similar to the MasterSkewb but without its corners.
The skewb is a very solid and satisfying puzzle to play with.
CUBE (SHAPE CHANGING)
Not the first fully functional 3x3x4 but the first mass produced.
Of this 3x3x3-variant only few examples were produced and sold in the eighties.
This is a newer version of the Megaminx, published by Meffert, with tiles and 12 distinct colors.