It seems we are barely even started into the new release cycle, yet I can already say there are some very promising choices. Below are a selection of my favorites: (A number are proposed specifically for the betas, but that doesn’t mean they couldn’t be used.)
Read more here

Though currently quite simple, this soft sketch of a friendly-looking Jackalope definitely shows promise. At this point, it seems a little too simple (though perhaps this version could be included as a secondary option), but with a slightly textured background or, perhaps, a lightly sketched setting for the Jackalope, I can easily see this concept becoming an excellent background for Ubuntu Jaunty Jackalope.