Once bitten by the Rubik's bug I was hooked for life. I'm happy to say and see that others on this site were infected far worse than me :) Nevertheless I think my collection is respectable in variety and quantity. Riddler17 (Gabe)
2X2X2
3X3X3
3X3X3 (PICTURE)
4X4X4
5X5X5
6X6X6 & UP
CUBE (SHAPE PRESERVING)
CUBE (SHAPE CHANGING)
OCTAHEDRON
OTHER EIGHT-SIDED
DODECAHEDRON
FOUR
TEN
FOURTEEN
TWENTY
OTHER N-SIDED
SPHERE
STAR
HEADS & OBJECTS
OTHER SHAPES
MOVING HOLE
MOVING MARBLES
MOVING TILES
SIAMESE & FUSED
FOLDING
ELECTRONIC
PATTERN MATCHING
OTHER MECHANISMS
BOOKS
GAMES
MISCELLANEOUS STUFF
UNKNOWN