This little air humidifier works great. You plug it into a USB slot. Can use it in your car or off your computer just about anywhere. It is small so it is very portable. I got the blue one and when you plug it up it has a light and the mist starts coming out right a way. You get an extra filer as well. There is no on/off button on this you just plug in and when not using unplug.
I like the size it fits right next to me on my desk and don’t take up much room there. Good quality and made good .