Be careful what you wish for.
After retiring and going on the trip I'd planned out for a year I suddenly found myself without a place to go. I wanted to go to New Orleans but my internet searches weren't going anywhere ('Volunteer Opps New Oreans' yielded tutoring and 'Habitat' yielded solicitations for money and job openings in the main office).
I mentioned this to my brother Jim and he told me about a flier he saw next to his ATM in Belfast, Maine. It advertised a work trip to Kenya through a group called Expanding Opportunities and that's where it all began.