What type of things to do are you looking for, what part of Phoenix are you in, and how far do you want to go? General touristy things in town:
Phoenix Zoo and Desert Botanical Gardens are both just east of Sky Harbor Airport. If you're the hiking type, both South Mountain and Camelback Mountain have hiking trails and are in town. Superstition Mountain on the east side of the valley is a good hike as well. Lost Dutchman's Mine is on the way out to Superstition Mountain, but I'd say that's getting close to the tourist trap line. Heritage Square Dining which includes the previously mentioned Pizza Bianco is supposed to be some of the best food in the country. Old Town Scottsdale if you're into shopping. There's a handful of museums in town.
If driving a couple hours is an option there's a few other possibilities.