Hey guys this is just an idea i got right now, i was looking trough the newgrounds wallpapers section and i noticed theres just not enough wallpapers, so maybe you guys could actually make an art contest about that (design a newgrounds wallpaper)
i hope you like the idea and consider it for the next art contest :)
PS: i know the available size of the images you can post in the art forum isn't proportional of a wallpaper, but i don't think thats a big deal, maybe you can post a preview of your wallpaper in the forum and host the full one elsewhere.