A deck of cards, a clothespin, a rope and a tassel that acts as the end of the rope.
A spectator choose a card and have it sign. The same is returned to the deck and the same closed in its box.
Now hook the clip to the box on the side and pull the string a little.
The box is thrown down by holding the end of the string and at the end the signed card will come out of the box remaining in the grip of the clothespin, while the deck is still sealed.
Supplied with empty red or blue case (standard Bicycle), clothespin, rope with tassel with attached video instructions.