A furniture accessory may include an armrest body and an insertion plate moveably coupled to the armrest body and configured for mounting to a furniture item. A moveable cover plate may provide access to a hollow interior of the armrest body. The furniture accessory may include a power output assembly for receiving and providing power to a detachable electrical accessory. The furniture accessory may include a power input interface and a power supply circuit for providing power from an external power source to the power output interface.