Any non-scam ways to make money off of cryptocurrency seminars?

I live in a rural area and the community here is interested in learning about crypto. So I'm thinking of doing a seminar for them, but would like to come up with a way to make some money off it. I wouldn't want to charge them for the seminar itself since it's purely educational.

But is there some way to make money off it? I was thinking maybe a wallet or exchange that offers a referral program, but it would need to be one worth referring people to. I don't want to do anything underhanded or scammy in any way.