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:
Hummingbirds like tube-shaped flowers and apparently are partial to the color red. So this cape fuschia (Phygelius sp.) is a popular choice for hummingbird gardens. Don't confuse this sun-loving plant with hardy and annual fuschias (see below) which are rather more shade-tolerant and belong to a different family, botanically speaking.
Here are the blooms of a hardy fuschia (Fuschia magellanica).
Alstroemeria, also called Peruvian lily, is another favorite.
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
To learn more about attracting wildlife to your garden, I recommend Russell Link's book, "Landscaping for Wildlife in the Pacific Northwest