Depends on the article. Cheap articles are not worth phographing, paying eBay a listing fee, possibly not selling it and then paying the closing percentage. I have found eBay's prices to get jacked up beyond what they are worth unless you have a very special collectable or desirable item.
Yardsales are a pain and run the risk of getting rained out. I would never do one without help because you'll need the bathroom and thieves aplenty frequent these.
One other venue to check out is local stores that outright buy stuff or consign it. There are many such bookstores, baby item stores, clothing stores, etc.