These Singing Magnets are the latest craze. They are very therapuetic to play with and make the most unusual sounds when they collide together.Simply throw them in the air and the hit each other, vibrating and dancing around making a wide variety of interesting noises, whistling, zinging. They are also called chatter stones, snake eggs, and zipper stones. They are not indestructible so make sure your on carpet when you throw them in the air (Just in case you miss) These items posses a strong magnetic field, so keep a safe distance from magnetic storage media, pacemakers, credit cards etc.These come beautifully presented in a gift box.Be the first in the country to have these!! Everyone will be interested in them.