USB hub warms up your coffee cup.

Can you guess what is this device? It is a USB hub with four slots. These USB hubs are ubiquitous now. Those whose computers are older than 5 years are sure to have this USB hub because old computers were fitted with just USB ports.

This USB hub also serves as coffee or tea warmer. Brilliantly conceived idea-right?

Don't worry, you can turn off the warmer with a flick of a switch.

Innovative USB hub cup warmer is for sale at Amazon.