not sure exactly what you're getting at macaxx, but there's a few out there to be sure. You could try a pineapple, or a cigar box maybe. There are a few novelty ones made in the design of apples and snails on the 'etsy' website. You can find Flying V shapes as well, Bell shapes etc.
You could also sound out a luthier to custom build you something, and, were you to go in this direction, I'd contact Duane Heilman at Black Bear Ukes who has built some incredible looking sweeties in his time. Check out his gallery pics for some incredible and creative masterpieces...
http://blackbearukuleles.net/listing.html?categoryid=1