Almost all of the above seem to approach the idea as if stranded in the woods. Some of the things mentioned are found in residential areas, but not all. I can find a lot of small game and some deer in my suburban backyard. The same is true for some edible wild plants. But I also know where specific ornamental plants are located. For example, I could easily find a number of places where daylilies are planted, and most of the plant, includin the tubers, is edible, IIRC. So one might be able to forage by raiding a flower bed.