Here's a serious eco-wonk status item: having a copy of The Environmentally Preferable Purchasing Guide on your desk. As our treehuggin' friends put it:

"Don't let the title dull your enthusiasm, or the fact that it is produced by the 'The Solid Waste Management Coordinating Board' of Minnesota

This looks to be a seriously useful little resource, if you're the sort who's interested in comparing, say, the toxicity in operation of various copiers, or the energy efficiencies of landscape mulches.