Consignment shops are a decent option to make some money back, but some of them are very particular, I understand, in what they will take. So check your local ones - they probably have a list of criteria (brand names, age of item, etc) I've never felt that the stuff I had would fit the bill, though I have purchased things at one in the past.
Maybe someone who has used consignment can chip in?
Also, some consignment shops will take what they aren't going to take, and donate it for you. Or you could go from the consignment shop with whatever was rejected, and take it straight to the donation bin.