Make an antigravity toy with just some magnets, a pyrex bowl, coper wire, a playing card and some aluminium foil. This is really cool! You can even interact with the flying card when the bowl is shut! Put 3 magnets somewhere, making a circle,over them, place a bowl, then wrap the card with aluminum and place a neodium magnet on each corner, then make about 15 loops with the copper wire (make it a copper coil) and put it inside the bowl. Then put the card in the bowl. Be careful, The negative on the magnets under the bowl must be facing upwards !