12 sided dice with musical notes on them. I want these!! In fact, I want these as fuzzy dice to hang in my car window. I also want these incorporated into a magic 8 ball (I'm working on it).
A big tip of my hat to Classical Convert for pointing the way to these gems.
The dice also be played with a tarot card / board game called the Muzoracle, but I think I'll skip that altogether.
They can be used in composing Aleatory and 12 tone-music, or as a basis for improvisation; they’re fun in a jam session. They also make an effective study tool: they can be used as “musical flash cards” when learning harmony, and their randomness makes for fresh and challenging exercise in sight-singing and ear training.