Long used for automotive and home repairs, now woodworkers have discovered X-Treme Tape can function as an impromptu clamp for holding wood pieces during the gluing process. Even odd shaped pieces can be held because of the tacky nature of the tape.
This stuff is just plain good to have around in case of emergencies. It forms an air and water-tight seal, is heat-resistant up to 500 degrees F, and insulates up to 400 volts per mil. Wow.
Here's an article on X-Treme Tape from the Woodworker's Journal site.
Rockler Woodworking Supply sells X-Treme Tape Quick Clamp Wrap in 10 foot rolls for about $6.50. Keep this in mind as a stocking stuffer for the holidays.