what is an elf on the shelf

An elf on the shelf is a mischievous little elf who watches children during the holidays to make sure they are behaving and reporting back to Santa on their behavior. They are the eyes and ears of Santa, keeping track of who has been naughty and who has been nice. The elves are small in size and have pointy ears and a magical ability to fly. They are known for their mischievous nature and are often associated with causing harmless mischief such as moving toys and other objects around the house.