I saw this today on Apartment Therapy and thought it was the cats pajamas and just had to pass it on. This "wallpaper" is the work of artist Payton Cosell Turner.
The "wallpaper" is made up of hundreds of thousands hand applied stickers!!! i love stickers. since I'm not a billionaire and would never be able to afford to do this on a large scale it do think it would be fun to experiment on a small scale....maybe as a series of framed pictures that you can add to over time? you could probably also make your own stickers....print your own designs or tiny photos on sticky paper. When i see stuff like this it makes me smile and encourages me to never suppress my imagination....always think outside the box.