Key Accessory by Andrew Gerard

This effect has been said by many to be the most powerful Metal Bending Routine in existence, a personal experience for someone and a souvenir like no other... 

Effect

Several keys and colored rubber bands are shown. A spectator freely selects a key. The key is initialed on one side by the spectator and then initialed by the performer on the other side. Next, a colored rubber band is chosen by the spectator and threaded through the head of the key. The rubber band is placed over the spectator's wrist and the spectator holds the key at their fingertips. The performer suggests that the spectator will feel the key soften and bend like rubber, they do, and it does. The key is felt bending while the spectator is holding it and it is attached to a rubber band around the spectator's wrist the whole time! Your hands are left clean and they are left with an amazing accessory. 

"Key Accessories adds a profound element of impossibility. The spectator will swear that they have been in control of the key at all times" Richard Marks creator of Key Warper