I haven't actually been into cubing for very long, and I don't have much money so my collection is kind of small
Rubik's Revenge (ITC)
Follow up to the Rubik's cube, as shown by its name.
Produced in 1982 and 1983 by Ideal Toy Corporation in Korea, Macau and Hong Kong.
Rubik's Studio 5x5x5
The new retooled version of Rubik's Revenge produced in Hungary by Rubik's Studio
CUBE (SHAPE CHANGING)
A 3x3x3 placed in midturn and reoriented in its original shape. Every piece is of unique shape and therefore sticker can be unicoloured.
A 3x3x3 with additional layers on four of its sides. It became a member of a whole series similar to the Crazy Plus 3x3x3s.
Six coloured balls have to be moved in their matching domes.