My wife loves yard sales and we buy a lot of things there. For example, I scoop the ashes from the wood stove with a $5 set of fireplace tools and store wood near the stove in a $1 rack. She also checks freecycle and we have gotten a lot of useful things there. We raise chickens and grow a garden. I really don't think that has saved us any money yet, and probably never will, but the eggs, meat, and vegetables are better than store bought and we enjoy the partial self-sufficiency.