Treehugger: G4E! An Eco Design Platform Good for Environment
Here you can find things like a water saving device for potted plants, inspired by the Namibian beetle’s system of saving water by cleverly using evaporation and condensation to its advantage (further rather cute explanations on their web site). This simple disc is called Econo, designed to cover the earth in your plant pot to catch the evaporating water leading it back to the plant, drastically reducing the amount necessary to water it. They calculated that it saves you up to 50% of water, perfect for those of you who travel often or simply forget to water the plants.