[floridaorange]

If you don't know what to charge - you probably aren't ready to charge. Once you have a following online and people are readily seeking you out to perform, the "just for fun part" will become an actual side gig and that's when you begin to charge.

In the meantime, maybe just ask for gas and food reimbursement or whatever, so you're not out of pocket. That's my take on it anyway.