The Elf on the Shelf tradition is an exciting part of the holidays, and it starts on December 1st! The elf comes to your home and is set up on a shelf, where it will secretly observe your child's behavior throughout the day and report back to Santa each night. Every morning, the elf will be in a different place in the house to surprise the child. It's a fun way for kids to stay on their best behavior, knowing their elf is watching!