First and foremost, farming. It's what I did from a young age - though I've pretty much quit altogether since the soil and weather where I live makes it more or less not worth the effort. Seeds, water, and a good fertile place to actually grow stuff, and it's something I'd be happy to continue doing. Also raised livestock (chickens, turkeys, ducks, basically birds - never dealt with cattle, pigs, and such), though in my case they've always been pets, not food. Still, it's something I'm good at.
Generally a good builder - hammer and nails, saw.... Would just need to get my brain to click back into angles and measurements, but I'd be good to go.
Never hunted, though I've always wanted to. I'm a crack shot with both gun and bow, so I'd like to think I could actually do that decently. Can also fish (simple, but I enjoy it.), sew a bit (though it's been years, and I'm used to having a machine, I could make do with the old fashioned needle.... Probably. I've done it one or twice before when I was young), and pressure can stuff (again, it's been a while, so I'd need to get the feel for it again.)
Of less note, since it's not generally considered hard, but I can also ride a horse, which would probably be good for the hunting. And if a messenger was needed I guess. Feel like this one hardly counts as a skill, though. Also perfectly happy to chop firewood. It's fun.
Things I probably should not be asked to do include cooking, dealing with rope/similar, and/or anything really involving knots. They won't likely hold if I tie them.
In closing, I guess if it were absolutely necessary, just give me a little room to get back into the stuff I do know, and I should do it quite well.