I have a treadle sewing machine and a stockpile of fabric, and can produce clothing!
My husband says he has MacGyver skills. I can attest to the truth of this.
Unless our apocalypse is biological in nature, it will probably involved either global warming or a mini-ice age of some sort, therefore experience in all farming all zones will be needed. Let the word go forth that all who can get plants to grow without poisoning the block or impaling themselves or their neighbors on a weeding implement are welcome in our New Society. Especially welcome are those with experience cultivating cereal grains. The malting, roasting and other processes necessary for the manufacture of good beer we can handle, it’s the basic barley we’re gonna need.** AugustWest** is hereby appointed holder of the Papazian Chair of Zymurgilogical Processes. Can’t fight the mutants dry! 
ah, just to offer a little help to the Chief; I used to run basic training for engineer troops way back when. If you need mili. engineers put together and trained, I think I can help.
I remember now that I’m in possession of two (count 'em) Swiss Army knives and I’ve started on a bit of amateur astronomy.
Useful if we need to find our bearings, or if our little society breaks down and you want someone to soothsage using the stars 