Going Green tip that is super easy!
When making copies try to select the 1:1 to 1:2 ration on the copier. This will take all the pages that you are copying, likely with nothing on the back (1:1 ratio) and your copied papers will come out with the copies on the back (1:2) ratio, or double-sided. That way you save paper, and in the end, hopefully, less trees will be cut down.
Thats just one small way to go green.