I'll add two things to this thread...
I just posted a link to a video on this post/thread:
http://www.sufficientself.com/forum/viewtopic.php?id=12158
It takes you through the simple steps of building a non-electric food cooler from simple components and materials. Worth watching.
Also - concerning another power-outage aspect - I ordered one of these lanterns, and it arrived a few days ago:
http://www.amazon.com/Rayovac-SE3DL...4XIS/ref=sr_1_1?ie=UTF8&qid=1331388923&sr=8-1
Long-lasting battery-powered LED unit. Our livingroom has cedar-board panelling and ceiling. And in an environment lacking a really reflective light-colored surface (like painted drywall), it's quite impressive that this little lantern provides
lots of room light.
Two main settings for constant light: one simply bright (and the alkaline batteries are said to last 150 hours on this setting); one
very bright (and the batteries are said to last 72 hours on this setting). There's also a pulsed signal-type setting, sort of strobe-like. There's a light diffuser that you leave in-place on the lantern normally, but you can remove it if you want a very intense point-source light.
The unit has a rubber non-skid covering at the bottom. There's a handle on top, a hanging hook underneath. It closes up really tight, and is certainly water-resistant. I think you could drop it in a bath tub or lake and find it's practically water-
proof!
Comes w/o batteries, so you have to provide three D-cells.