what is the elf on a shelf all about

The Elf on the Shelf is a Christmas tradition where a mischievous elf named Scout Elf comes to visit children and families during the holiday season. The Scout Elf acts as Santa's helper, reporting back to the North Pole with daily updates on the child's behavior. The Scout Elf hides in different places throughout the house during the day, only to be revealed when the family gets home from work or school. The Scout Elf can also bring a note from Santa or a small gift as a reward for good behavior.