I knew a guy who's wife used to roam around swap meets and garage sales to buy stuff that she'd then resell through ebay. if there's something you're kinda rainman about knowing the value of, that tends to be a somewhat to fairly viable way. get some narrow focus on things you know well/are a good judge of character about and hit garage and estate sales when feasible. it's not a fantastic ROI, but it's not terribly hard hard work, but you do have to have a solid knowledge of what has how much value and how quickly you'll be able to move stuff you buy.
