You will get
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A magician (you) will pick a volunteer from the audience to choose one card from a deck of cards. You will have the volunteer sign the card and return it to the deck of cards. Then, have the volunteer shuffle the cards by him/her self.
Next, you take out a new plastic bottle from a paper bag and wrap duct tape around the bottle. Then, you will explain that when throwing the deck of cards in the air, you will hit the cards with the plastic bottle, and the card which has been signed by the volunteer will stick to the bottle.
However, instead of the signed card sticking to the bottle, all cards will drop on the floor. You will explain that it was due to hitting the cards too hard. Then, you will peel the duct tape off the bottle, and magically there are the cards which was signed by the volunteer. The card is inside the bottle!