Squash is a real world worker! Perform it in almost any situation and leave your spectators with a unique souvenir.
A card is selected and signed by your spectator then returned to the deck. You now set the deck on the table, or your spectator's hand and a regular bottle cap is introduced.
The cap is slammed onto the deck and instantly vanishes without a trace!
You now spread the deck facedown to show that the image of a flattened bottle cap has appeared on the back of just one of the cards. The spectator is allowed to feel the card to verify that the image is stuck tight. You now turn over the card to show that it is the signed selection!
Now for the kicker! You take the single signed selection and hold it over your spectator's cupped hands and pop the card - instantly a real flattened bottle cap falls into the spectator's waiting hands!
You now turn the selection over to show the cap really has fallen from the back of the selection and you leave the spectator with the signed selection and flat bottle cap as a reminder of the strange happening they have just witnessed!
Points to remember: