Salvation Army! In some cities you can bag/box it up, call and schedule pick-up, and they will come to your home and pick up from the curb. What's great about this is you can request a receipt (max $250 p/pick up). You can use those receipts when filing your taxes (deductions).
I call Salvation Army for everything (furniture, clothes, household items, toys, etc.). They give it away to those in need.