We saved 22% on paper costs last quarter by implementing a few suggestions.  First we encouraged employees to use the back side of paper for notes and scratch paper instead of just throwing it in the recycled bin.   Second when possible, we now print front and back side.  You need to use laser prints for the most part.  Inkjet  don't work well in my experience.  The easiest double side projects are any notes, meeting minutes and notices that turn out two pages or less.   Over 2 pages it does get a bit tricky but will save paper.. thus money (and the environment!)