We’ve all been there. You’ve just brewed yourself a steaming cup of liquid loveliness, you get back to your desk to a flurry of urgent emails and by the time you’ve averted all manner of minor disasters like the superhuman workhorse that you are, your cup of steaming refreshment is stone cold. It’s really very annoying. Well at last there’s a suitably techie solution in the USB cup warmer. Simply plug this little gadget into your USB port, pop your cuppa on the hot plate and the cup warmer will keep your beverage at the optimum operating temperature for as long as you care to leave it.