A thumb tip with a small suction cup attached to the tip can be used to create the illusion of floating small objects . In this effect, the tip remains on the magician's thumb while the suction cup is affixed to a small object with a smooth surface (such as a light bulb or empty aluminum can), effectively attaching the object to the thumb. With the fingers spread, the thumb moves the object in such a way that it appears to be floating independently of the hands.