A Creative Take on a "Edible Rain Garden"

Using (ideally) reclaimed/salvaged rain gutters, this creative application is a space-saving and fun way to grow vegetables. Installing them at slightly alternating angles allows rainwater to effectively trickle down from one to the other, irrigating with no effort required! Of course, in the drier months they will need supplemental irrigation, but this can be done with water harvested and stored in a rain barrel (or from grey water re-use).
Even in the "off-season", this type of installation has a quirky, artistic aesthetic, especially if painted in a way that ties them into the rest of the landscape design.

Bio-Dynamic Pools!

This is a new concept to me, but I love the idea. Using plant material and other natural means to create a low-impact, environmentally-responsible swimming pool. No need for chlorine or other harmful/abrasive chemicals. Plus the aesthetic impact is amazing: plants growing out of the pool!
http://www.biotop-natural-pool.com/system.html