Popular Mechanics was at Steam Powered, the California Steampunk Convention, and has a piece on their site of favorite gadgets from the con. Seen here, from top to bottom: The Stroh violin, Holly Conrad’s mechanical wings, and Kevin O’Hare’s box camera digital casemod.
10 Best Old-Is-New Gadgets from 2008 Steampunk Convention
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I spotted a predecessor to that Zohl violin at the Deutsches Museum in Munich a couple of years back: http://flickr.com/photos/aplumb/121281640/in/set-72057594092419973/