Public restrooms can be gross and even dangerous. Peeing on whatever's around is also gross and very likely illegal. The Uritrottoir Urinal Planter tackles both problems. It's made up of two boxes, with one on top holding plants, fertilized soil, and the main portion of the urinal, which sends your pee down onto the straw that's held in the lower box. A sensor tells when the straw needs swapped out and taken to a separate composting facility, before eventually making its way back to another unit as food for the flowers on top. Currently on trial in Paris, it seems likely we'll be seeing them elsewhere in the years to come.