Treehugger, Popular Science Magazine and Instructables.com website have come together to make a competition for "how to" tutorials about green inventions and designs made from found items, used items, or just stuff that's eco-friendly. The competition rules include helpful links to get you started making a tutorial with photos, illustrations or video.
I love reading sites like instructables.com, makezine.com, and lifehacker.com where people discuss ways to get more from technology that's already available. It's a very common sense approach to creation and design, but its still exciting!
Let us know if you submit any project ideas to the instructables.com "GO GREEN" competition (comment below, or email). And good luck!