ZWO-2 - Singing magnets
The Singing Magnet (Latin: magnes cantante = singing magnet) belongs to the family of worry or palm stones. It's an exceedingly rare and unique species.
These little things are so dependent upon each other that you will only see them together in the wild in pairs.
Whoever holds a couple of these magnets in their hands will automatically start playing with them and, after a few minutes, putting them aside will become virtually impossible.
Why are they called singing magnets? You'll find out when you separate them and throw them both up into the air!