Where I live there are no places that make health food and deliver. When I was in Hawaii I was blown away with some of the little food places that made really healthy stuff. Other than that... a gym!!
I have actually been looking into opening up a fromagerie (I love cheese haha) little to no income to be made though. Just for a nice little side project.
Open an Any Lab Test Now franchise. Personally, if i were to open another buisness, it would be home inspections. Good money, low overhead, flexible hours, and no need for employees.