when does the elf on shelf leave

The Elf on the Shelf is a popular Christmas tradition where a scout elf watches over children and reports back to Santa. Typically, the elf is placed on a shelf in a child's room and stays until Christmas Eve. On Christmas morning, the elf is replaced with a new one to start the tradition again. The tradition dates back to the 1970s, when a book titled "The Elf on the Shelf: A Christmas Tradition" was first published. Since then, the tradition has grown in popularity, with families all over the world participating in the tradition.