I had this dream for a necklace. It'd be a Hebrew calendar, but as a necklace. Like, for Rosh Hashanah there'd be charms of an apple and honey π π―, for each Rosh Chodesh a moon π, a tree for Tu BiShvat π³, a heart for Tu B'Av π, a wine glass for Pesach π·, etc. with ordinary beads spacing them out correctly.
Also, in this dream I was telling my friends about this and they were like, "how will you handle leap years? would you make Cheshvan 29 or 30 days?" π