Diagonal 2x2x2A 2x2x2 where the pairing colour is placed on the cubic diagonal.
HexcopteroidA two-layered hexagonal prism with three different kinds of turns.
Magic ChangeA 6x6x6 bandaged into something like PocketChange cube.
Penrose Fisher cubeA shape variant of a shape variant: A Fisher Cube treated like a Penrose Cube.
Scramble Ghost Floppy CubeA scrambable version of the Ghost Cube 1x3x3 also viewable as a ghosted version of the Super Floppy Pentagonal 1x3x3.
Square-1.25A square puzzle looks like a square-1, but with one quarter of the square-2.
(1+1+1+2)/4 = 1.25.
Square-1.75A square puzzle looks like a square-2, but with one quarter of the square-1.
(2+2+2+1)/4 = 1.75.