Plugless sink is exactly that, a sink without a plughole. To get rid of the grey water we have to tip the water out. This idea is totally useless, because what it does is just complicates everything, and takes time, and I’m pretty sure that 99% of the people will prefer to use a normal sink. Anyway the designer Maja Ganszyniec made this sink with the purpose of making people more conscious of how much water we are using and mainly throwing away. This sink shows the value of water through its volume and promotes water re-usage. – Via