20 Things That Only Needed One Added Detail to Become a Thousand Times Cooler

Today, scientists and designers invent hundreds of useful ideas that nobody would have even thought about just a few decades ago. But they also don’t forget about the ordinary things that, as it turns out, can be dramatically improved by adding just one small detail. This is how we now have hairdryers for shoes, umbrellas that collect the raindrops after they are folded, and even pedestrian crossings that don’t allow cars through.