Recycle: Freecycle [1] is an international grassroots and entirely nonprofit movement of people who are giving (and getting) stuff for free in their own towns. One person's trash is another person's treasure! Everything posted on Freecycle is free; individuals and groups work out their own bartering systems.  Sell it on Craig's List [2] and you make the arrangements with the buyer for pick-up/drop-off.  Or if eBay is your seller of choice, consider using Mission Fish [3] to support your favorite causes through trading on eBay. A portion of the profits go to a nonprofit of your choosing, and you get a tax deductible receipt! 

Donate/Recycle: Excess Access [4] serves both charities and the environment by matching your unwanted household materials with the wish-lists of nearby nonprofits that can provide pick-ups or accept drop-offs.

Donate: Donate furniture and other household goods to Goodwill International, Salvation Army, or the Vietnam Veterans of America [5] (who will pick it up from the sidewalk in front of your house). One main source of funding for the Vietnam Veterans of America is through the solicitation and resale of donated household items.

Donate: Build it Green NYC [6] is New York City's only not-for-profit building materials warehouse. Donate and find everything from kitchen cabinets to mantelpieces, wood burning stoves, stained glass, and antiques all at reduced prices.