A few months ago, in an old issue of Make Magazine I saw instructions for building a soldering fume extractor, to keep you from breathing in the nasty fumes that solder produces when melted. In the article they built it all inside an Altoids mint tin, powered by a pair of 9V batteries. Then, a couple of weeks ago at a Michael's I saw a Darth Vader head lunchbox. I picked it up due to it's low price and high geek factor, assuming I would eventually think of something to do with it. Yesterday the two ideas came together - I cut out mouth of the Vader helmet, wired in a power regulator, switch, and a 12V fan, and built my own much cooler fume extractor. It works great, too!