There's no shortage of modern wallpaper designs for kids' spaces on the market. The decision to put wallpaper on the walls is a bold one, and if you're going to go to the trouble, it's got to make an impact. Rather than putting up something that borders on cartoonish, try something less than traditional for a kid's room.We found these 5 terrific patterns over at The Wallpaper Collective that would look smashing in a child's room or play area. They are sophisticated enough to be enjoyed by older kids and adults alike so there is no rush to take it down anytime soon. You can see many more designs at The Wallpaper Collective.