The September 2007 issue of Traditional Home has an interesting article, Green Space. Ways to make your home green (eco-friendly) include bamboo floors; shades made of reeds, grasses, and bamboo; quartz countertops; cabinets from Poggenpohl with a melamine finish (the company doesn't use protected woods or wood from the rain forest); and recycled cabinets, countertops; and furniture.
Cork is also a renewable resource. They strip the bark off, and it grows again. That is an amazing thing. And check out stores that sell recycled building materials; Habitat for Humanity has a store in our town, and we've donated a refrigerator and floor tiles to them.
Don't forget coir. The Winter 2007-2008 issue of Lowe's Creative Ideas has a nifty idea for a doormat made of natural coir fibers. You can stencil (use masking tape to hold the stencil in place) your house numbers or your name in the center of the mat and add a border, if you want, by taping the areas that you don't want painted. Use a spray paint. They used American Accents, Espresso (#118117); The color goes well with the mat's color.
There's a sculptural stool carved from a block of monkeypod wood (sustainable) in the Signals catalog. Each block is unique. Link: Signals - Gifts That Inform, Enlighten & Entertain (Supporting Public Television since 1986.)
Sustainable countertop material: Andrew & Stacy: The Green Team -- Sustainable Countertop Material