Rubber Wand

Effect: The magician's solid wand or pencil seems to turn to soft rubber. On command, it turns solid again.
Secret: Hold the wand horizontally in front of you between thumb and forefinger about a third of the way from the end. By moving your hand up and down in short quick moves, the wand will seem to become flexible and appear as if it were made of rubber (see illustration). This is an excellent optical illusion.
Presentation: Tap the wand on something to show that it is solid. Say the magic word and now demonstrate that it is wobbly and flexible. Another magic word and it turns solid again.