1. Show a pen to your audience. 2. Ask your spectator to pinch the pen through the cloth of a handkerchief. As she pushes downward, she feels the pen shrinking smaller and smaller. 3. When the handkerchief is removed, the pen is seen to have really shrunk!
A pen slowly shrinks in size under a handkerchief, while in your spectator's hand. Your audience will react strongly when they see the adorable mini-sized pen appear. This surprising effect actually allows your spectator to feel the pen shrinking!