Awesome use for thoses large cardboard letters

Hi,,

I've often seen those large cardboard block letters at Joanne's or Micheal's. I was always thinking someday i'll buy them to put on my sons wall spelling out his name. But i like this idea way better...

here is where i found this great idea:
 http://www.apartmenttherapy.com/olivers-owl-inspired-nurserymy-room-168671?img_idx=1