Music: performs for events of all varieties, demographics, magnitudes, etc. Offers lessons in improvisational piano and recording software training (specializing in Ableton Live 9 and GarageBand).
Web Development: freelance work, specializes in creating full-stack Rails applications. If you need a website (personal or business) and you need it now, I can whip up a polished, production-grade application within a day.
Tennis: lessons, paid matches/hitting sessions, and racquet stringing.