When buying furniture for your backyard, it may not seem like the greenest solution to buy plastic pieces, but it all depends on what kind you buy. Recycled plastic lumber furniture is made entirely from plastic bottles collected from curbside recycling. Unlike wood, plastic lumber does not splinter, warp or rot, and its color is solid from the top all the way to the core of the furniture. You can leave it unprotected outdoors, and it’s virtually maintenance free. To clean, just rinse with a garden hose. And the best part? If you ever need to replace it, it’s recyclable.