Earring of Message
Wondrous Item, common
The blue crystal of this earring is wrapped with delicate copper wire. The earring has 5 charges. While wearing it, you can use an action to expend 1 charge and cast the message spell. The earring regains 1d4 + 1 expended charges daily at dawn.
Source: Critical Role: Call of the Netherdeep p. 212