This is one of those ideas that makes you think “How in the earth has no one though of this before?”. We all know how useful humidifiers can be but they are large and unpractical, you can’t take them anywhere. This portable USB Humidifier solves this problem. Just fill a bottle with purified water, place the humidifier into the opening of the bottle and plug the humidifier into a USB port for instant comfort. You can turn it off by unplugging it or just leave it because it auto turns off after 8 hours.