Brass!
There's a common brass lust among many steampunks, and this thought came to me as I was practicing for my Trumpet Techniques final (oh, to be a music major): I've not seen any pictures of steampunks playing brass instruments. It's period-perfect, since the Industrial Revolution marked many advances in brass instruments... not to mention, they're beautiful to look at. Have we got any brass players in here? If so, post pics of you incorporating your instrument into a steampunk look!
(Sadly, I was not able to do so, since I don't have a decent camera... *grumble grumble*)
(Sadly, I was not able to do so, since I don't have a decent camera... *grumble grumble*)