If you are always busy at your office or on your work desk, sometimes due the burden of work you don't have enough time to have your food, So you just take a cup of tea or coffee but still you are busy in your work forgot drink your coffee.
Then off course your coffee or tea will get cold and then it becomes tasteless for you. So there's no other option rather than heating it again, but what if your coffee automatically gets heated on your work desk or table, without keeping it on fire. Yes it is now possible all you need to do is just buy a USB cup warmer and attach it to your PC's USB port. This cup warmer works on the heating effect of electricity (much similar to joule's law).
This awesome gadgets also comes with USB hub, but it only supports USB 1.1.. Well you can use this gadgets while chatting with your online friend, or working on your project, just keep the coffee cup on warmer tray and wait for few seconds your coffee is now ready.
Watch this Cup warmer in Action :
Keep in your mind that your coffee cup must be made up of Steel or any other good heat conducting material, else if is made up of plastic then you will get your coffee mixed with melted plastic.