Funny usb heater

The coffee has cooled down - press the button on the heater in which the cup stands. Trite? And if the heater is made in the form of a boiler? Which should stick in a cup? Yeah. It also reminded me of Soviet childhood and numerous trips on business trips. Of course, this is not a mega-classic in the form of a boiler of blades. But the "toy" is great.
It’s a pity that it’s really impossible to boil water. Only warm up. And thanks for that.
via Engadget