A pair of valuable earrings seem to tremble where they lie.
If touched, they let out an ear-piercing burst, requiring a Fortitude or Constitution saving throw, for each creature in the room, to negate. Upon failure, you are deafened for 1d4 rounds.
The earrings are capable of only one burst, and may be safely taken as loot afterwards.
Broken glass by Max Pixel. Creative Commons cc0.