Rattlesnake Eggs or Singing Magnets are two finely polished, high powered, oval shaped magnets made of hematite. Take the magnets to your hand and separate from each other - just keep some small space between them. Then throw them in the air. The two strong magnets fly and collide. When the magnets collide in the air you can listening very interesting buzzy sound.
Not only kids will enjoy lot of fun with these magnets, but also it is suitable gift as an gadget for adults too! Singing Magnets are not only a toy, but you can found with them some educational benefits too. For example With these super strong magnets you can easy demonstrate the power of magnetic fields.