What a way to make an object vanish!

 

After showing both sides of this colorful cloth, hold the four corners of the cloth together in your hand to form a loose bag. Drop an object into the "bag", like a borrowed wristwatch. Instantly let go of two of the corners of the cloth so the cloth "bag" falls open- it's empty! The object has vanished!
 
Ingeniously designed cloth allows objects placed inside to visibly vanish. Special non-sag feature sewn in to the cloth prevents exposure of the gimmick.

 

A wonderful comedy trick that uses a Devil Napkin is the Vanishing Bandanna.