Here's one person's take on what a x home lot can provide as a small farm. Depending upon your local city codes you may not be able to have things like the pigs (maybe goats, if any meat / dairy animal at all).
Grass pathway through the vegetable or flower garden and a twig arch on each end of the path. Remember to make it the same width as the mower. The twig arch would look great with a gate. Image from the Complete Kitchen Garden Book