Looking for an out-of-the-ordinary water feature? If you don't have a slope for a waterfall and a fountain won't do, consider a 'rain shower' structure like this. This contemporary design would work well in a high-tech or zen garden.
How to Build a Rain Barrel. This could catch the rainwater off a greenhouse or shed.: “Break-Through Organic Gardening Secret Grows You Up To 10 Times The Plants, In Half The Time, With Healthier Plants, While the "Fish" Do All the Work.