The Elf on the Shelf: A Birthday Tradition In Santa's Christmas village, the elves have their own special way of celebrating birthdays-a tradition that goes back thousands of years. Now, at the request of children around the world, Santa has given special permission for his scout elves to share that tradition with the families who love them. But an elf cannot come to a birthday party unless it is invited. The Elf on the Shelf: A Birthday Tradition...