In Central Florida, I can usually get fresh citrus in some form or another just about anywhere. Oranges, tangerines, loquats and blackberries are common and taste fine as is, if a bit sour for the wild ones. Lots of people grow cabbage and taro, so I nick a few leaves every now and then to boil and eat. Up north, I rely more on roots, mushrooms, and barks like White Pine/Oak, orange jelly, chanterelle, and sassafras. You can nick apples from the orchards pretty easily, or just find them growing in semirural areas. Wrinkled Roses are edible too, you can eat them fresh or candy the flowers. Wild Grape grows in the swamps near Kingston, and there's all sorts of edible stuff around Swansea and Seekonk in Mass.