If you hate "packet tricks", but consider buying just one, then we recommend Card Rings Plus. From a card case you produce three cards, which are shown from both sides. On each card is printed a ring. Two are black…one is red. The backs are blank. Place two cards face to face. When you separate them, the black and the red rings are linked together on one card! Repeat the procedure with the third card and all the rings are now linked together on the same card! The card with the three rings is put in the case for a moment. Snap your fingers. When you take out the card, there is only one ring left on it! The other two rings have materialized and are still linked together! As a finish you blow on the rings and they unlink. Only three cards are used.