how to introduce an elf on the shelf

An elf on the shelf is a small toy elf that Santa Claus uses to monitor the behavior of children and report back to him. The elf is typically placed in a child's bedroom near the beginning of the holiday season, and the child is told that the elf will be watching their behavior and will report any naughty behavior to Santa. The elf is also supposed to move around the room each day to indicate that he is watching and can see everything.