This news just came out 4 days ago and could save paper and potenially slow down the cutting of trees by over 30%. In Japan, YankoDesign came out with a new pencil sharpener that also makes pencils. Feed it waste paper and lead to receive a new pencil that is eco friendly. When the pencil becomes dull, put it in and it will sharpen it. I have to admit, that's neat.
More on the P&P sharpener at: www.popsci.com/gadgets/article/2010-09/new-shredder-turns-discarded-office-memos-fresh-new-pencils