Rubik's Cube Braille Tiles

My oldest daughter (9 Years old) and I designed and assembled these braille tiles that can be glued to a Rubik's Cube. Following the idea of Universal Design (Example - Curb cuts help people using a wheelchair, but also parents pushing a stroller) I try to create things that a sighted person and a person who is blind can work together on. If someone is color blind they can also use different color plastic to accommodate for the colors they can't differentiate.
The braille is follows Grade 1 a