Paw paw, store and freeze the pulp. Any berries, all grow great up there. Typical fruits you find at the farmers market, maybe save the seeds and try grafting with your root stock. Brassicas, collards, kale, chard is easy and a good one. Chives, all the roots grow well up there in spring and summer. Depends on what you and your folks like to eat. Black walnuts are all over the creeks and parks, go out there w a bag man that's gold for the winter. Bee hives if you have the room.