I've been building and buying Rubik's cubes since I bought my first cube in 2009 or so. Here is my collection so far:
2X2X2
3X3X3
Rubik's Cube
Quantity: 1
The third of the three different Ideal 1980 U.S. packages.
4X4X4
Rubik's Revenge
Quantity: 1
Follow up to the Rubik's cube, as shown by its name.
Produced in 1982 and 1983 by Ideal in Taiwan and Macau.
5X5X5
6X6X6 & UP
V-CUBE 6
Quantity: 1
The first mass produced 6x6x6. A six layered cube.
V-CUBE 7
Quantity: 1
The first 7x7x7. A seven layered cube.
CUBE (SHAPE PRESERVING)
Master Skewb
Quantity: 1
An incredible creation by Katsuhiko Okamoto. A very rare puzzle for many years it became mass produced in 2011.
Mosaic Cube
Quantity: 1
Mefferts renamed version of the Fadi cube
Rex cube
Quantity: 1
A cornerturning hexahedron. Very similar to the MasterSkewb but without its corners.
CUBE (SHAPE CHANGING)
Fisher's Golden Cube
Quantity: 1
All the stickers on this 78mm modified Skewb are the
same reflective golden colour. There is only one solution.
Gear Shift
Quantity: 1
A 3-D puzzle solely based on gears.
Micro Axis Cube
Quantity: 1
A very popular shape transformation of the 3x3x3 dramatically reduced in size.
Quirky Cube
Quantity: 1
A puzzle which reminds one of the Square-1 but introduces a whole set of changes to the original set.
CUBOID
2x2x3 (aka: Slim Tower)
Quantity: 1
A formerly custom now mass produced 2x2x3 cuboid, commonly known as the "Slim Tower"
2x3x3
Quantity: 1
Custom made 2x3x3 cuboid, invented by Tony Fisher.
3x4x5
Quantity: 1
The long awaited bigger brother of the 2x3x4.
4x4x6
Quantity: 1
A fully functional and fully proportional 4x4x6 made from a 4x4x4.
OCTAHEDRON
Curvy Octahedral Megaminx
Quantity: 1
A megaminx in octahedral shape. It is not a shape transformation but designed from scratch.
Skewb Diamond
Quantity: 1
Meffert's build-up and truncation of a Skewb into an octahedron.
OTHER EIGHT-SIDED
Mystruncated Cube
Quantity: 1
A 3x3x3 equivalent to the fused cube. It was radically truncated.
DODECAHEDRON
Holey / Void Megaminx
Quantity: 1
The Holey Megaminx or Void Megaminx - inspired by the Void Cube this is a megaminx without centres.
Megaminx
Quantity: 1
Meffert's six colour 1982 version. Roughly 31 mm along an edge.
Pyraminx Crystal
Quantity: 2
Essentially a Deeper cut megaminx at heart, the Pyraminx crystal adds a new twist to the classic puzzle.
RHOMBIC DODECAHEDRON
FOUR
Pyraminx
Quantity: 1
The 1981 Tomy version.
Pyraminx
Quantity: 1
The black 1981 Meffert version.
TEN
FOURTEEN
Bump Cuboctahedron
Quantity: 1
A Bump Cube (aka Mirrorblocks) truncated into a cuboctahedron.
DaYan Gem I
Quantity: 1
An edgeturning hexahedron transformed into the shape of a truncated octahedron which is an archimedean solid.
OTHER N-SIDED
Alphaminx
Quantity: 1
The first puzzle in a series of Truncated Kleetopes -- this version is a Truncated Triakis Tetrahedron.
Rock
Quantity: 1
A 2x3x3 truncated into a random assymmetrical shape.
SPHERE
OTHER SHAPES
Stickered Tripod
Quantity: 1
A Platypus dyed and stickered to change the look into that of a classic puzzle.
MOVING HOLE
Missing Link Key Chain
Quantity: 1
The 1982 official Rubik's Missing Link Key Chain released by Ideal. This puzzle stands 60mm tall excluding the keychain, and the keychain's plastic attachement loop.
Whip-It
Quantity: 1
This 3x6 Whip-It stands approximately 7cm tall. Produced in Macau. Original LJN Whip-Its were made in Hong Kong.
SIAMESE & FUSED
Cubie Chaos 1
Quantity: 1
A small number of Eastsheen 2x2x2s joined and extended to form a 2x4x5 block which poses a new kind of challenge.