Sam Dalal’s ElectroFun magic in the late 1990’s.
You show a simple cardboard and plastic holder for four different colored chips. (The chips are approx. the size of a US quarter dollar). The clear lid of the holder hinges open, and the four chips are dumped out of the holder, leaving four obviously empty spaces. The spectator chooses a color, and the other three chips are replaced in the holder, which is closed, and then placed on the table with the clear lid facing down. The chosen chip is vanished, and when the sealed holder is turned ove, the vanished chip is now back in its holder space.
Easy to do — just one sleight to vanish the chip, but even that sleight could be eliminated by simply putting the chosen chip into your pocket instead of vanishing it.
Brand new with instructions.
