Quick plug for MakeZine. A lot of the stuff featured on the site/magazine are electronics, but there's all kinds of stuff...one of the front page articles is on turning a silver half dollar into a ring. Could be handy for all that stockpiled silver...people will still want to get married after the TEOTWAWKI, and a silver ring would have some good barter value.
Here's a link to an article on how to make your own rain barrels. Cool...