You Don't Need a Back 40
I think the most satisfying garden I ever had was in my son's first year of life. I knew I would not be able to do a whole lot with our land at that time, so I invested in some annuals to grow on the porch. The porch was fairly shady but I remember we had a good amount of visitors.
The best part was the hummingbird feeder. We spent a lot of time out there and the birds were quite used to our presence.
Having such a limited number of plants meant I was able to care for and groom them to perfection. It also meant I was able to observe the various insets that visited up close. My favorite was the hummingbird moth.
I feel lucky now that I have more than a few square feet to garden in, but the lesson of the tiny potted garden is one I will forever cherish.