I'm working on a amigurumi ukulele at the moment, because I thought it was tragic that a Ravelry search for ukulele resulted only in a pattern for a pair of slippers.
I should post here more, shouldn't I?
When the apocalypse comes, the knitters will be revered as gods. Their ability to churn out inexpensive, stylish knitwear will be valued beyond measure. Knitting cures radiation sickness, helps keep you warm from that pesky nuclear winter, and a chunky sweater (100% wool, of course) can keep a family of four fed for a month.