Another item I think should be included in a survival kit is a small frog gig. These are small, light, and can be attached to any length of pole handle improvised when needed. They can be used for spearing fish, frogs, and other small animals and sometimes birds.
Just my thoughts.
Instead of the frog gig, carry some nails. Packs up smaller and has a few more uses. And best of all... its not illegal!