Well, as you may know, elf on the shelf is a popular Christmas tradition. And while the elves are said to have magical powers, they don't actually move on their own. Instead, each elf is carefully placed by Santa himself in different places around the house, often as a way to watch over children and make sure they're behaving properly. Some elves also come with their own storybooks, which are meant to be read to children to further encourage good behavior. So, ultimately, the movement of the elf is a matter of Santa's choosing.