1ℓimit faucet designed by Yonggu Do
, Dohyung Kim & Sewon Oh. Faucet looks like an elegant test tube inverted on top of a tap. The glass tube holds exactly one liter of water, sufficient for a quick hand wash. According to the theory, we all waste almost six liters of water and use only one, while washing our hands. Once the stored one-liter is used up, you have to turn off the tap till the next one liter fills up the tube. A cumbersome rationing process that will hopefully drive home the point of conservation!