This trick is perfect to perform down your local pub.
When someone asks you for a light, you take a box of matches from your pocket and place it on your hand. The box begins to scarily move down your hand into your fingers and open all by itself! You then take a match out for them, close the box and put it back into your pocket. They will be absolutely frozen still with amazement!
I once performed this trick in a pub when a girl asked for a light and she screamed and dropped her cigarette!