This is an interesting coffee mug inspired by the interface of charging battery that widely appears on smartphones, tablets and etc. The coffee mug is made of ceramic, and as we can see from the image, it features a heat sensitive battery design. When holding cold water or beverage, the battery icon shows you an empty status. Once you fill up the ceramic mug with hot coffee or other beverage, the battery indicator will turn green. Apart from that, the coffee mug can hold 12 ounces of liquid goodness.
The heat sensitive battery coffee mug is priced at $9.99 USD.