Seriously. You know the trend is dead when Halloween Express has a line of Steampunk-themed costumes and accessories.
This has got to be my favorite.
Let's see... You're Steampunk Spock dressed as Dracula at a goth rave! Right?
I know it's not any more ridiculous that the generic-Goth wigs they sell in those places, or all the slut-bunny costumes that get pushed on women. But it kind of highlights the problem with "Steampunk" as a subculture, namely: you can't extrapolate from steam-age technology or aesthetics if you don't start there in the first place. (We won't even talk about Victorian ethics!)
Frankly, a pair of Steampunk goggles mass-produced in plastic may be the definition of irony. If you want a pair of goggles, go buy a repurposed vintage pair from some artist on Etsy.
Better yet, hit the antique malls and make 'em yourself.