The ELF on the SHELF

I don't know if you've ever heard of this... but I thought it was a really cute idea!
Check it out... The ELF on the SHELF After much urging by the elves and Mrs. Claus, Santa has allowed his biggest secret to be revealed in the book, The Elf on the Shelf: A Christmas Tradition®. Santa has partnered each book with a magical scout elf which children name. They can then visit the North Pole (elfontheshelf.com) to register their elf’s name in our Hall of Registry and print their official elf adoption certificate. All Santa approved, of course!

How else would Santa know if you're being naughty or nice? They even have a skirt to put on the elf to make it a girl! ;)