Braille Beads

Braille blocks on Thingiverse: https://www.thingiverse.com/thing:1702802

Reduced size blocks made into beads:

https://www.tinkercad.com/things/lHllWquJVFQ

Shorter print, popular letters only:

https://www.tinkercad.com/things/kgqSxYfWJEr