$12.99 for Xtreme Bluetooth Wireless Music Receiver ($19.99 List Price)

Xtreme’s receiver eliminates the need for wires, much like a puppet that has grown its own muscles. The tiny device plugs into the 3.5-millimeter jacks of car and regular stereos. You can stream music wirelessly from Bluetooth-enabled devices, and its 33-foot range means you can wander around the house while songs play uninterrupted.

Enables speakers to stream music via Bluetooth
Works with car, home, and unsuspecting department-store speakers
Plugs into 3.5-millimeter jacks