I love Rubik's cubes, and currently have the 3x3x3, 4x4x4, and 5x5x5. The adorn my desk in a tower, and now they have a new companion. The 3x3x3 Rubik's Mirror Blocks Cube is made just like a traditional cube, but the face of each side is unique not in color, but in size. It is quite a bit more challenging than the regular cube, and takes me about 10 minutes to solve compared to my normal 1.5 minutes on the regular cube.
Anyways, off to play with it some more.