The magician presents a small, red box, removes the lid and dumps out three one-inch, chromed, steel ball bearings. The box is put to the side of the table.
One at a time each ball bearing is not vanished, but turned invisible. The three invisible balls are touched together and in a burst of light, everyone goes back in time, back to the time when all three balls were visible and inside the box. The lid is removed from the box that has been in plain view the entire time, and the three steel balls are dumped out once again!