Kids are crazy for Elf on the Shelf, but for parents it can be equal parts fun and formidable. Who hasn't spaced out about moving the elf one night only to be met with questions from prying tots in the morning? (One mom recently confessed that she told
Elf on the Shelf -- "Dear Children, you stayed awake so very late last night that I was not able to make my nightly trip to the North Pole. Please, tonight go to sleep on time so I am able to fly back to report to Santa."