Freecycle

FreeCycle is a non-profit organization, currently consisting of more than 9 million members, that aims to make the most of Earth's limited resources. Part of that involves finding new homes for unwanted stuff, so it doesn't end up in a landfill. As a result, you can find just about any free item, from televisions to beds for pets, on the free and transparent FreeCycle site. Because the movement relies on community groups, you'll want to visit the site and then search for offers in your specific area. Some regions have more activity than others, but unless you're in a particularly sparsely-populated area, you should be able to find a decent selection.