Konstantin Datz’s Rubik’s Cube for the blind turns a visual game into a tactile one. Rather than looking to match up the colors, you must match up braille for green, blue, red, yellow, white and pink. The squares are completely white, so sighted or not, you have to learn braille to use it. (Seems fair actually.) It’s just a concept but it would make a great tool to teach braille to more people.