Odd Man
Thru Hiker
So the site is in Swedish, but I suppose you could use Google Translate. Anyways on this page, the links on the left have patterns and instructions for DIY hiking gear...
http://andersj.se/gor-egna-friluftsprylar-diy/
http://andersj.se/gor-egna-friluftsprylar-diy/