I just found this fascinating website where people took part in making Steampunk Cakes. Cakes!
It seems everyday there's some sort of amazing new Steampunk USB device, mask or even a Stormtrooper, but who would have thought of cakes?
Well, clearly quite a few people and you can see really cool delicious-looking designs here:

http://artisancakecompany.com/?p=1249