Everybody pees. Urinals are poorly designed. Pee ends up on shoes and pants and floors.
Someone in the Netherlands tackled this problem and designed a urinal that efficiently catches pee and uses a clever bit of psychology to help the boys leave the maximum amount of pee in the urinal. A fake fly is etched on the porcelain in precisely the right spot.
By the time it is realized that the fly doesn’t move the pee is collected – simply brilliant.