GreenSmart's Bottles 2 Bags Mandrill Laptop backpack is made of 100 percent recycled plastic bottles. The bottles are ground into chips, spun into yarn, woven into fabric, then made into lightweight bags. Great for hiking and camping, as well as the environment, the bags feature a large open interior compartment, a separate laptop section that can accommodate up to a 16-inch laptop, air-mesh padded back and shoulder straps, exterior pockets, and cording. Choose from three color combos: black/gray, blue/gray, and green/brown.

Price: $75.