Don't worry, it won't be a show-winner. I'm thinking something that will exhibit my creative streak and my poor artistic skills. Some inspirations include Kurt Russell's car in Death Proof and an A-10 Warthog (but without the vulcan or the titanium cockpit).
On a more serious note, what's a good source for accessories? I don't have the bagger attachment for the mower deck, and I'd like to be able to get it to blow into an enclosed trailer.