when did the elf on the shelf come out

The Elf on the Shelf, a popular Christmas tradition where a toy elf is placed in a family's home to report back to Santa Claus on children's behavior, has been around since 2005. The tradition originated in the United States and has since spread to countries around the world, becoming a popular holiday tradition. Many families enjoy the magical and playful aspect of the tradition, and it has become an integral part of the holiday season for many.