Just what I needed, these are the perfect size for my project: A Rubik’s Cube for the Blind. I googled a bit, and after finding that Braille Rubik’s Cubes go for as much as $200 dollars, I went on to find knock-offs. I found a few, that were less than impressive.
https://www.amazon.com/Self-adhesive-Clear-Rubber-Feet-Bumpons/dp/B001JASGH4

