Steampunk is a sub-genre of science fiction, and fantasy that came into prominence during the 1980s and early 1990s. It involves a setting where steam power is still widely used such as in Victorian era Britain or the "Wild West"-era of the United States. Works of steampunk often feature futuristic innovations as Victorians might have envisioned them, based on a Victorian perspective on fashion, culture, architectural style, or art as seen by a member of a rebellious counterculture group. The technology includes such fictional machines as those found in the works of H. G. Wells and Jules Verne, or the contemporary authors Philip Pullman, Scott Westerfeld and China Mieville.Huh!!
So how would ...could you show it in a miniatures setting? What do you use? Do you create something that could conceivably be used by your miniature people?
Or would you make it so futuristic that it has no rhyme or reason for being?
....and while you puzzle it out. Steampunk is generally shown using watch gears, wheels etc. ....if that helps.