Here's a fairly nice DIY modular, with some crafty etched-brass faceplates. The modules are pretty standard fare for the most part, the usual collection of Thomas Henry, Ken Stone, and Electronotes modules favored by straight DIY modular builders, but the net result is fairly impressive, I have to say, even though it takes a modular the size of Bonn Harris' Doepfer rig to really impress me any more.
I imagine this was already posted several other places, so people that actually care about this sort of thing more than "oh, that's pretty" (which describes me) know all about it by now, but in the event you missed it, the builder's blog can be found here, and there's an interview with the builder on the Steampunk Workshop site here. Quite frankly, to be truly steampunk I believe a touch more attention should be paid to the wooden portion of the thing. But I do like the etched brass bits.
As an aside, I find it somewhat interesting that, completely unlike almost all other aesthetic movements, steampunk doesn't really have a soundtrack. I suppose that a modern electronic remake of "The Lights O' London" wouldn't really cut it. And for the more America-centric neo-Victorians, there's really only so much Stephen Foster a person can take before they want to gouge out their eyes with an engraved brass letter opener.
But the real reason, I believe, is that "steampunk" as an aesthetic movement is largely propelled by wannabe engineers, rather than wannabe creative types. Color me crazy, but I'd rather see cool Victorian stuff and cool modern stuff in separate wings of the museum. I guess that's one reason I don't wear welding goggles all day just because they look cool. (Which, I'll grant, they kinda do, in a weird Tank Girl sort of way.)