One way to go green without costly changes is to take things you would ordinarily throw away and reuse them. Milk crates can become book shelves and metallic drink pouches can be stitched together to make pencil cases for the children. This practice is called upcycling and you can either do it yourself or contribute reusable household trash to organizations that convert it into eco-friendly products. Through free collection programs called Brigades, upcycling pioneer TerraCycle is collecting and paying for packaging waste from household staples.