Mixup 3x3x3A 3x3x3 that allows swapping of centers with edges.
Mogwai CubeA 3x3x3 with fur and other materials instead of stickers.
Monoblock bandaged Cubes without cornersThis is a set of four bandaged cubes all bandaged by a single block. None of these blocks include a corner piece so they are not equivalent to a Siamese Cube of any kind.
Multi Gear Cube KitA generalized version of the Paso Doble. It allows all kinds of gearing ratios between opposite sides for all three axis.
Nightmare 3x3x3Although it may appear to be a normal 3x3x3, It's actually bandaged internally.
Nine Color CubeA unique cube with nine colours distributed on the six faces.