When the shtf.. A fisherman's throw net. No fishing but handy for catching many seagulls at once. A snake pit never ate a snake but if I had too I would and poison can be drained and used on an arrow if no gun. Skin also makes a good tie.
Learn how to gut and skin also would help.
Let's not for get seaweed if you live on the coast. We all at one stage had over grown lawn well those grass seed's have flour.