You could set up hummingbird feeders, of course. But it is much more fun to add plants to the garden that will attract the "hummers."
Here are a few suggestions:
As is Crocosmia 'Lucifer.'
I don't want to give you the impression that only red flowers attract hummingbirds. They are curious little creatures and seem (at least from what I've observed) willing to visit anything colorful. Then, quick as a flash, they streak across the sky and "tweet" about what they've discovered.
Here are a few more of the long list of plants that will attract hummingbirds: honeysuckle (Lonicera sp.), trumpet vine (Campesis radicans), strawberry trees (Arbutus unedo), Ceanothus, Penstemons, lupines, coral bells (Heuchera sp.), elderberry (Sambucus sp.) and many others. The Sunset Western Garden Book has a detailed listing of plants for hummingbird gardens in its Guide to Plant Selection at the front of the book.
To learn more about attracting wildlife to your garden, I recommend Russell Link's book, "Landscaping for Wildlife in the Pacific Northwest."Link is a wildlife biologist with the Washington Department of Fish and Wildlife, who also happens to have experience in landscape architecture. Although his book is specific to the Pacific Northwest, the general principles he offers can be applied in other regions, too.