"Choose and use a wide assortment of products made from recycled products, such as pencils made from old blue jeans; binders made from old shipping boxes; and many types of recycled paper products. You can also reuse items like refillable pens, rechargeable batteries, and scrap paper for notes. Using recycled-content and reusing supplies prevents waste and saves you money."
http://www.epa.gov/osw/specials/funfacts/school.htm
