Crazy Rubik's Cube Variations Answered
Love this list of different takes on the classic Rubik's Cube. There's one for the blind, odd shapes, and even the massively complex one in the picture below.
Of course we have plenty of Rubik's Cube Instructables here as well, including a Blind Man's Cube and a whole list of others.
10 Creative Rubik's Cubes via Core77