Being green at work 
Hidden power usage
Ok, we turn off the lights when you leave the room, use efficient light bulbs. But did you know, when you turn off your machines, computer, printer etc - if it is still on stand by mode it is still using as much as 15 to 20 watts? Studies of homes say standby mode uses 10% of all energy. This is the hidden price of a little more convenience. 
Paper
55 percent: the amount of water saved by producing recycled paper as compared to virgin paper. Recycled paper also takes 60-70 percent less energy to produce than paper from virgin pulp.
Do you need to print that? Is your machine set to print both sides as the default? Can you use one sided printed paper as your note paper for random thoughts and spontaneous mind maps? I kept a folder on my desk just to store this used paper.
Lunch
* Bring your own, and promote discussion of good food. * Don't eat el desko, eat with others. Introducing shared meals once a week was the best thing I did at ecostore.* If you bring food in from local cafes, take your own reusable containers like tupperware instead of the single use containers you usually get with takeaway.