The Composting Vertical Garden Tower, Available at GardenTowerProject.com - YouTube
Rain Catch System For The Garden, rain water is neutral in PH. and is great for plants.
Flower Towers - Gardening (make this with PVC pipe and smaller pvc pipe with holes for water.)
Consider a "living wall" for your home or office. Beautiful, oxygen-producing and air-filtering, and VERY satisfying.
How do you grow squash and zucchini?!
Vertical garden made from old rain gutters!