The Elf on the Shelf is a popular tradition during the holiday season. The elf is a magical figure who watches over children's behavior and reports to Santa Claus about their good or naughty deeds. The Elf on the Shelf typically makes its appearance in early December, around the start of the Christmas season. It remains hidden during the day and comes to life at night, observing the children and leaving small tokens or messages in the morning as a reminder of its presence.