I have a spoke wrench, and set out to adjust my wheel myself, but discovered that I had a more serious problem, a missing spoke. This is more than I wanted to take on, so I started checking Yelp for places to get a bike fixed.
This area is full of excellent bike shops, but they have a tendency to cater to the Silicon Valley bike snob type, so I was a little wary of how much this simple, but potentially time consuming, repair job might run.
Based on comments in the Yelp review like "This is THE place to get a commuter bike serviced" I decided to give the Stanford Campus Bike Shop a try. They had it done that afternoon (new spoke and re-trued), and charged $26; I don't know what it would cost elsewhere, but not bad for a job that would probably be a full day's work for me, during which I would no doubt teach the kids some unintended new vocabulary.