I recently came across iPad Flava, a site that showcases images that have been pre-formatted for use as iPad wallpapers (1024px x 1024px). Some of them are a little lame, but they do have some nice ones too. Check it out if you’re tired of your current iPad wallpaper.
Wallpaper
50 Mac Desktops…
AppStorm has compiled a pretty nice collection of 50 Desktop Pictures (Wallpapers). Although their title is, 50 Mac Desktops for Maximum Visual Goodness, only a handful are actually Apple related.