Useful Gadgets – The Hot and Cold USB Coaster

We have all seen those USB coasters that let you keep you coffee or tea warm, well now there is the hot and cold USB coaster.

Now you can choose to either keep your coffee warm or your beer nice and cold, just make sure you don’t get the settings mixed up otherwise you will end up with cold coffee and warm beer.

The hot and cold USB coaster is available to buy online for $42.03 from GeekStuff4u.