Marvin Birnbom started selling WWII surplus in 1947. That business has grown into surplustraders.net, which offers more than 900 pages of deeply discounted electronic overstock. The site lists both bulk deals—1,000 AA batteries for eight cents each, 10 keyboards at $4.50 per—and a few individual items (12.1-inch LCD screens for $89 apiece). But Birnbom, a hobbyist himself, will sell you any quantity of anything as long as you meet the $30 minimum order. Just give him a call: 514-739-9328.
138 years of Popular Science at your fingertips.
Each issue has been completely reimagined for your iPad. See our amazing new vision for magazines that goes far beyond the printed page
Stay up to date on the latest news of the future of science and technology from your iPhone or Android phone with full articles, images and offline viewing
Featuring every article from the magazine and website, plus links from around the Web. Also see our PopSci DIY feed
Science is reinventing play, from extreme sports to gamification to ridiculous roller coasters to the playgrounds of tomorrow, and this issue is chock full of fun. Also, on a less fun note: Did global warming destroy my hometown?