Here are some wallpapers. These work great with iPhone and iPod Touch (Retina Preferred):
http://kingdomisland.com/img/wallpaper/blue-wallpaper.png
http://kingdomisland.com/img/wallpaper/bugz-balloon.png
Here is a Desktop Background:
http://kingdomisland.com/img/wallpaper/desktop-dragon-bugz.jpg
These will also be added to the "More" section of the website under "Wallpaper". Enjoy!