Blind Cube - 3D Stickers for Twisty Puzzle
Video Tutorial: https://www.youtube.com/watch?v=PrttfeVEGlw&feature=youtu.be
1) Print 9 of these each (you can print 9 at a time if you wish).
2) Remove stickers from a 3x3.
3) Super Glue pieces on.
Now solve by feel!
Scaled to standard Rubik's brand where stickers are 1.5cm^2