Kazoo

The kazoo was an enchanted musical instrument that adds a "buzzing" timbral quality to a player's voice when the player vocalizes into it. This kazoo was used for calling Charon from the Underworld to hitch a ride down River Styx.

It was given to Cole Turner by the demon Tauschung after he kidnapped Phoebe Halliwell to make him face the Underworld's deadly traps.