I have quite a bit of experience in and can comfortably teach;
Permaculture, horticulture, vegetable gardening, bee keeping, aquaponics, landscape design, composting, vermiculture(BSF and Eisenia fetida), animal behavior(especially dog), primitive skills(lashing, bow drill, cordage, knapping), plant identification(especially wild edibles), Guided tours on local ecology and nature, facilitating initiative/team-building activities, rock climbing, fishing. guitar.
Services I could use would be chiropractic, yoga, massage therapy type stuff. But I'm always surprised by what people have to offer and I really like learning about new things.