Head on up to the SFO area. Nice sightseeing. Tahoe is not far. Columbia etc to the East. Castle AFB museum (B52, Vulcan, F111 etc). Half Moon Bay, Monterey. Vegas? San Diego. Heck, you could even Fly up the valley, and back down the coastline. The air alone affords plenty to see - without landing (other than re-fuel/de-fuel)
Whatever way that you take, it sounds like a fun trip. If I can help in the Bay area, E-Mail me.