I wish I were an expert in:
I heard about a person who lives full-time at Oliver H. Kelley Farm historic site and helps farm there and do interpretive, living history. That sounds like a dream job to me.
I do a lot of volunteering at my local library, helping organize special events like bike education workshops and literary readings. I would love to organize special events at libraries as a full-time job, especially events that bring people together to collaborate in new and interesting ways.