Thanks. Some day, knowing too much about flaxseed oil might come in handy.

Doug, maybe we can make a knife sheath out of a DIY oilskin tarp made from a bed sheet?

... which can be unrolled in the field to provide emergency shelter!

Now you're starting to think like me! (Careful, it's a slippery slope!)

Hem the tarp/bedsheet with small cordage which can be rewoven into a suitable gill net.....Some of the cordage can be fashioned into a bow drill for fire making. Shelter,food, and fire all in one!