Every morning when we take a shower, we waste around ten liters (three gallons) of water while we wait for the hot water to come out. This device is a funnel that collects this water into a pitcher so that it can be used for other purposes. Perhaps half of the population of Mexico City takes a shower every day. If we do the math, ten liters times ten million inhabitants equals one hundred million liters. This device could save up to a million cubic meters of water every day.