We don’t have a Goodwill close by, and the policy in our neighborhood is to set anything you no longer want out on the sidewalk. Chances are good somebody who walks by will take an interest, pick it up, and walk away with it. If it’s too large to carry, I’ve seen folks make a call and get a friend with a truck to give them a hand.
I walked out of our building late last year and saw that somebody had set out a tiny banjo right in front of our building! It wasn’t tuned but looked to be in great shape otherwise.