If you put this under your Christmas tree, and with a poster written ` please put present here' , when Santa come, when he put it on top of it, and surprise!
This is design for fun, it doesn't help anything to human being. Just come up with this idea that Santa Should Not to be seen by people, but it may wake you up, or just a prank for Santa.
* Warning: think before putting this under your Christmas tree, as your gift may be gone. :)