Interested in being a writer? Then write blogs or books. How about a engineer? Build things to meet purposes. Scientist? Conduct experiments to glean unique insights. Movie director? Find the video record button on the cell phone or camera.
Graduation shouldn't demark the mass transition from one expensive school to another. Real graduations are the celebration of the personal transition from incompetent to valued, anonymous to cited, and unpaid to paid. Through technology, the barriers to entry for each phase will continue to get lower.
Getting money to do what you love is a primary goal of life anyway. It is never to early to start.