Tip #3: Print smarter (or not at all).
The average U.S. office worker can use 10,000 pieces of copy paper per year. To reduce your number, print double-sided whenever possible. Avoid color printing (hues are more likely to be toxic) and consider downloading Ecofont to save ink. Better yet, really think about whether you need that information down on sheets of dead trees, or whether having it on your computer is good enough.
Tell us: Do you print double-sided?