I've been running a local meet-up centered around designing for FOSS and doing it thoroughly, choosing MuseScore as our first project. The meet-up has attracted people inexperienced with both UX design and scorewriting and it's been a good learning experience.
I'll talk about my experience with running a local meet-up, where we worked on designing MuseScore, an open-source scorewriting program, with a group of volunteers that had little to no prior experience with both the UX design process and with scorewriting. The design process we're going through is rigorous, including stakeholder and user research, persona creation, scenarios, and the like.