We've scoured and scoured for household items on Craigslist before, but never actually advertised that there was something particular we were seeking. Have you ever posted a "wanted" ad for that certain something you sought for your home on Craigslist?
And if so, did it help you find what you were searching for? We've never done it because we have a hard time believing that someone who just happens to have what we want will just happen to just stumble upon our ad and decide to sell it to us. Maybe we're just being pessimistic.