Another great example of selling your byproduct: Danny Meyer has grown Union Square Hospitality Group from a neighborhood bistro into 11 successful New York restaurants and a catering company. For years, the restaurants educated visiting chefs and managers. Then Meyer wrote his memoir and began speaking to employees at airlines, insurance companies, and hedge funds. Now, those lessons are formalized in an education program called Hospitality Quotient, which charges $425 for a four-hour session and $1,500 for a two-day immersion.