1. The Rubik's Cube for the Blind. Blind people can touch Braille to identify, so they mark Braille instead of color on the Rubiks Cube, and design this Braille Rubiks Cube, so that blind people can play with their hands. Blind friends need hands to constantly perceive and have a strong memory to play.
2. Lego for the blind. The number of bumps in the Braille version of Lego is different, representing the 26 letters of the Braille alphabet. For example, the "A" box has only one bump, while the "B" box has two bumps arranged vertically. Everyone can learn Braille by assembling Lego, and play with idioms solitaire to write short compositions. The principle of Braille coincides with the convex design of Lego foundation bricks.
3. Chess for the blind. This kind of chess is fixed on the chessboard by magnets with patterns, which represent the moving direction of the pieces, and the weight of each piece is different. The white chess piece is made of matte iron, and the black chess piece is made of hardwood. The protruding height of the chess piece can also show whether it is on Haig or white grid.