I started out volunteering for the Blue Ridge Scenic Railway

I'm a patron of our National Rail Museum here in York, UK, which sounds grand, but only means life member.
Glad to hear that someone else has a real interest, apart from being a Geek!
The only volunteer job I've been offered is running the kids train at the weekend, methinks no-one else wants the job!
By trade I run my own ad. agency, whch specialises in recruitment ads., but I'm down to 3 days a week and retiring next year.