Great ideas so far, and I don't have any ideas to add to the food area, but one area of survival is security and that can be added to by gardening too. I don't know where you’re at but there are several types of shrubs that have thorns that will deter all but the most determined thief. Holly comes to mind because of it’s growing range but there are others. If your homeowners association will allow it you can plant them around the perimeter of you property, or if they won’t let you do that them plant them under all of your windows making arrangements incase it’s used as a fire escape.