Driftdisc

Drow matrons and other prominent drow use animated, 6-foot-diameter stone disks to travel in state for important ceremonies or occasions. Every so often an eccentric drow may even use a driftdisc as a bed. The disc can carry up to 300 pounds and fly at a speed of 30 feet with perfect maneuverability. Unattended driftdiscs customarily float 3 feet above a horizontal surface.
Each driftdisc is activated by a different command word. If he device is within voice range, the command word activates it, whether the speaker is on the disk or not. The disk can then be controlled telepathically by the creature that spoke the command word. Mentally commanding the disk is a free action, and the user can do so at a range of up to 120 feet. The user retains control of the disc until he uses another command word to deactivate it. At that point, another creature could speak the activating command word and take control of the driftdisc.
Once per day, the user can animate the driftdisc as though with an animate objects spell. The animated disc is a Large animated object with a fly speed of 90 feet and perfect maneuverability. As an animated object, it fights and moves as directed by its user.
Moderate evocation and transmutation; CL 11th; Craft Wondrous Item, animate objects, detect thoughts, overland flight; Price: 113,760 gp; Weight: 1,500 lb.
Source: Underdark