The person behind the Coldwell Banker Twitter feed (@coldwellbnkr) passed along this great article about 22 Little Ways To Go Green from the folks at This Old House.
It is a really good read packed with tons of tips. Some of them are a bit obvious (like replacing your shower head to a water-saving one or unplugging your power tool) and some are unique but smart (like putting food coloring in the tank of your toilet to see if it is seeping and you are wasting water!) and some are just good solid tips to avoid waste that you may not have thought about (like mixing all of your drips and drabs of white paint--come on you know you've got them, we all do--into one can and using that to paint your workshop or garage.)
Definitely worth checking out and saving to save a few bucks in waste!