elf on the shelf is typically around 15 inches tall, making it the perfect size for children to relate to and interact with. But it's not just the size that makes this elf so special. It's the fact that this elf can magically move around the house while the child is sleeping and report back to Santa about the child's behavior, ensuring that Santa can decide whether they've been naughty or nice. It's a fun way to make the Christmas season even more magical for children.