It has to look nice, naturally, but I wanted something a little more personal, while at the same time keeping the weight as low as I could. I scanned the line drawing in the plans as a JPEG, opened it in MS Paint and toyed around with a few ideas.
I polished mine, and used vinyl stickers applied by a local signwriting business, taking inspiration from our loco's at work. Simple, light weight, cheap, and it stands out like dogs balls in the circuit, I'm told!