I work in a state office (you know, the ones that waste all your tax-payer money :tongue

. This is what we do:
Turn off lights in areas nobody is using, switched out our lighting with high efficiency fluorescent, we recycle ALL our paper. We recycle all the batteries we use. We make scratch-pads out of one-side printed paper. We use electronic edit-tracking instead of printing out multiple copies of reports for editing. We publish our reports electronically now and only print a dozen or less. We have recycling for glass and metal from our lunch containers. And we buy as many of our office supplies manufactured from recycled material as is practical.
I'm sure there is other stuff we do that I can't remember off the top of my head. And we started doing all this stuff voluntarily long before it was pushed in other offices.