I've been experimenting with some of the principles in here and have found some interesting things - the camp loom, making simple doors and windows for shelters, designs for chairs and benches

So for all those of you who don't have this already, here is a link to the online version

http://chrismolloy.com/www/p131

There is a downloadable version somewhere, but I can't remember where now, so you will have to look for it yourselves!