Free haircuts in New York City
The official lingo for it is being a model. You call up and say that you're interested in being a model, and follow their instructions for how to sign up. Each place does it a bit differently. I've had two EXCELLENT experiences with world-class salons and paid a fraction of what they usually charge. However, I've also heard horror stories about students left unattended by their supervisors and making a big mess of people's hair. So be a bit weary. Some of the wait times can be long, so I've steered clear of those places.