A few years ago, I came across a segment in a show that had Nasa engineers finding brilliant solutions toeveryday problems. Their task that day was to improve the hand dryer found in restrooms..
What I'd love to have, is something that makes the hot water in the shower last for at least a full hour(For those of us that like to take long 15 minute showers
), and a Lithium Ion Battery for Desktops to use in case of power outages. A 3/6/12 hour version.
Or do any of these things already exist?