CocoPPa is an app which enables you to make your favorite image as the “one-touch icon” and place the icon on the home screen. Create your very own cute and customized home screens using images submitted by creators and users. Unlimited free cute icons, wallpapers, stamps.
I think being able to customize things on your phone the way you want to is pretty cool. They have users who make themes, so you can make your phone icons and wallpaper match, or you can choose individual icons or wallpapers.