Do your own estate sale. It is nothing more than a fancy garage sale. The only difference is you open the home up and sell the things inside instead of outside. Calling it an estate sale gets a higher price on the items. Get a couple of friends to help you.

Agree with SandyC, and maybe look for some local charities that you'd like to support. For instance, I know of 2 in my area that focus on helping people out of homelessness, so they look for things like basic furnishings, appliances and household goods. Currently I have a box going of things we don't need anymore due to bathroom reno even though they are perfectly good - ie towels and accessories like soap dispensers that are now in colors that have nothing to do with thenew bathrooms - and I will pass it on to one of these local organizations when I am done. Personally I'd rather know that these items are helping people in need than bother with making a few bucks off them in a garage sale. And I feel confident because they are local (and I even know some people on the board of directors) that they collect only what they need and won't toss it into a dump somewhere, if for no other reason than they have limited storage facilities and so won't take things they know they can't use.

One of my pet peeves is the amount of waste associated with many renos, you see it all the time on the TV reno shows - people taking a sledgehammer to perfectly good cabinets rather than carefully uninstalling them and donating them to an organization that could use them, etc.