Another link
This one is interesting. It's called Tricks of the Trade, and its a collection (almost in blog format), of different handy tips and tricks from various professions. Here's an example:
Camper
To make an easy omelet
* boil a pot of water on a fire;
* Put eggs in zip lock bag with cheese, meat, peppers or whatever you would like on your omelet
* Boil bag for 10 minutes.
* Viola: omelet
Here is the link: http://www.tradetricks.org/