what's the deal with elf on a shelf

The "Elf on the Shelf" is a popular tradition in which a toy elf is placed on a shelf in a home, and is believed to report children's behavior back to Santa Claus. The idea is that if children misbehave, the elf will report it to Santa, and if they are good, they will be rewarded with a present. It's a fun way to add some holiday magic and excitement to the season!