Most of these examples come from the British steampunk blog Brass Goggles.
Check out this functional Steampunk Wheelchair.
How about this beautiful steampunk guitar?
Here's a massive functional steampunk computer that was offered as a contest prize:
And an insane VTR controller:
And better yet, my favorite, the steampunk laptop by Mr. Datamancer (who gets a shout out from the NYT):
Some of the stuff there is lovingly hilarious, completely useless and 100% style, like this steampunk iPad and steampunk Segway:
Check out these goggles, which i found here at Wired: