elf on the shelf

*Elf on the Shelf* refers to a modern Christmas tradition involving a small scout elf doll that families place in their homes during the holiday season. According to the associated story (popularized by the 2005 children’s book *The Elf on the Shelf: A Christmas Tradition*), the elf observes children’s behavior and reports back to Santa Claus each night. Each morning, the elf reappears in a different location, creating a game for children to find where it has moved.