The Elf on the Shelf is a popular Christmas tradition that involves placing a small elf figurine in a different place each day. While the elf's physical movements are not realistic, many parents choose to play along with their children, explaining that the elf is watching their behavior and reporting back to Santa Claus. This interactive game helps promote good behavior and creates a fun holiday atmosphere in the home. So while the elf itself may not physically move, the joy and magic it brings to the season is very real.