Questioning everything and never suspending disbelief, Wavey doesn't believe Santa is *watching* her at all times. So, I briefly considered "The Elf on the Shelf" tradition until I came to my senses that it would completely freak ME out having this doll around the house.
Don't get me wrong, Wavey believes in Santa. But she's only threatened by his knowledge of her fresh behaviors when I feign calling him on my cell phone. She's ever-so-practical.