We all know about the mainstream variety of glasses, from sun glasses and prescription sunglasses to aviator glasses and just the regular kind. But have you heard of USB glasses? The USB sunglasses in question look the same as any normal pair but are packed with something a bit different. Simply remove the back part of the frame to reveal two USB sticks that act like any other ones do. This is a good way to carry data around with you without worrying about it being in your pocket or on your keys. How many other strange USB inventions are out there and how do they work?

Ever made a cup of tea but been too busy to drink it finding that when you do it has gone cold? Well the USB cup warmer is made just for this purpose, you simply put the cup onto the warmer and it keeps the drink at just the right temperature to keep it warm.

The USB fridge is useful for when you just want to keep a can of drink cool by your desk. Although its purpose is to fit nothing bigger than this inside it, if you really squeeze it in you could perhaps fit in the odd sandwich.

Of course the webcam now is not very strange at all but when it was first released onto the market it was very weird indeed. Adding sound to it as well enabled many companies to have video chats with sound without having to pay a penny extra.

The USB missilie launcher is another strange USB invention. Simply control it with the keyboard and use the webcam that is on it to zoom in and fire the target. Although seeming to be like a bit of a waste of money, this invention can become the life of the office.

So to buy or not to buy that is the real ending question here.