what does an elf on the shelf do

An Elf on the Shelf is a popular Christmas tradition in which a small elf figurine is placed in a family's home, watching over the children to ensure they are behaving. The elf then reports back to Santa each night about the children's behavior, and Santa uses that information to determine whether they have been naughty or nice. The Elf on the Shelf is said to have magical powers, including the ability to fly and move around when no one is watching. It is a fun and whimsical way to add some Christmas magic to a family's home during the holiday season.