Magic prediction Wallet
Place any card into wallet and have someone pick a Card tell them you have a Card from another Deck and Have made a Prediction. Insert there card on the side with wide Straps. Next Close the wallet by saying so we both can't touch the prediction and to stop any Medling it is now Closed. Ask what's the odds my card On the other side of the Wide straps matches your? Open it to reveal that your Card is the Same one and it to them take the other out and place it in other pack of cards by saying I'll place its march back.
Performer places an object in one side of the wallet (secured by straps), the object instantly jumps to the other side (also secured by straps). Easy to Do!