Black And White Chips
Two black and white chips are shown, one in each hand. The magician closes his fists around the chips and when his hands are reopened, the chips have changed places!
The spectators are under-whelmed when they discover that the chips are simply double-sided: black on one surface and white on the other. Turning the chips over in the magician's hand makes the "magic" happen.
Now the real magic begins. As the magician explains the double-sided nature of the chips, suddenly, from nowhere, one side of one chip turns blue! Then another side is shown - to be green! Finally, to bring the trick to an astonishing close, the remaining two sides are show to be different, as well: one is red and the other is yellow! Everything may now be examined.
The chips are made of plastic and are silver as in the photo