Only thing I noticed you might add to your list is a jar of vinegar. I know it sounds stupid, but if you take a rag, and wipe the vinegar on your legs and arms, and any exposed skin, it will keep the ticks and chiggers off of you, as well as poison ivy & oak. Since squirrel hunting doesn't require your scent to be un-noticable, it won't make a bit of difference to the squirrel, and it will keep her a lot more comfortable while she is hunting.
I don't take my wife very often because she is a better shot than I am, and I can't stand the ribbing.
