Consider yourself a Green Guru? Know your way around a water catchment system or living roof? How about around a frosting tip and baking pan? If you answered yes to all of the above, you are quite prolific. You also might consider entering architect Michelle Kaufmann's modern gingerbread house challenge. Check out her website for directions on how to make an edible replica of the mkSolaire home, or create your own eco-friendly candy house and submit it to Kaufmann's website.

The deadline is Friday, so you've got to get bakin', but if you need a little inspiration check out some of the submissions here.