Vanish any small object from the audience, like a ring, coin, bill, signed card or any other small item. Show a bottle of soda, water or juice of any kind and give to the spectator to hold. Now invite him to open the "factory sealed" bottle to realize that after pouring all the liquid out the item has magically re-appeared inside.
This is a set of 12 red auto-seal universal size caps, good for any soda, water and juice bottles.
Comes with written instructions.
Lots of possibilities! A great magic accessory! Easy to perform!