Whether you love them or hate them, Rubiks cubes can help you kill a lot of time. One drawback to traditional cubes is that the visually impaired are left out of the fun/misery.
Here’s a bright and innovative idea. Instead of different colors, use braille to mark all the squares so that even the blind can have a go at solving the puzzle. Best would have been if they used both colors and braille.
I wonder what else we can use braille on. Jigsaw puzzles would be good start, but the shape of each piece would need to be unique or we’d need to use braille to mark a sequence on the pieces. Maybe a deck of braille playing cards? via.