what is the elf on shelf

The Elf on the Shelf is a popular Christmas tradition where a tiny elf, sent from the North Pole, keeps an eye on children's behavior during the holiday season. Each morning, the elf is found in a different place around the house, reporting back to Santa Claus whether the child has been good or naughty. The elf is a magical creature that cannot be touched, and if touched it will lose its magical powers. The elf's sole purpose is to keep the children on their best behavior during the holidays.