Sheng-Zhe Feng and Ling-Yuan Chou are responsible for this innovative design concept: The Circulating Fish Tank and Plant Pot. You place your normal houseplant in the pot on top and a small fish on the bottom. The water fed to the plant passes through a filtration layer before entering into the fish bowl, ensuring that it is clean. At the same time, the fish excrement gives off healthy nutrients for the plant. Furthermore, this keeps fish waste from contaminating the water, and persistent humidity results in minimal need for watering.