Art. Lebedev Thermal Battery Mug
Are you unimpeachably science-minded, an unapologetic geekaroo? Consider, then, the heat sensitive ceramic Thermal Battery Mug. It 's designed to look completely black until you pour in liquid over 96.8° F. Then, by the magic of a science we don 't fully understand (though you will you nerdlet!), a battery icon appears, charging up and down with green power bars to match the level of your liquid. Science, you have truly outdone yourself.