In this example, I use some copper tape to make an altoids tin look more steampunk-like. (I guess the other thing I've noticed is that there should a relatively high degree of customization, so this is probably
only partway to being a complete steampunk-like project, if I'm headed in the right direction at all.
(Of course, I imaging for "real" steampunk, you're not supposed to cheat like this at all; if you can't machine your altoids-style box out of a solid block of copper, you should at least fold it yourself out of sheet metal. Still, I like to cheat!)