I setup an audio system for a conference today. There's a piano in the lounge that it was setup in, and I was sitting there playing Sunshine of Your Love and Smoke on the Water while I was waiting for the clients to show. They heard me playing and this guy offered me $50 to play during their lunch break. I had to decline because 1. I doubt it would go over well if the university found out I was getting paid to play piano on their time and 2. I uhhhhhh don't actually know how to play piano.