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Heat-activated Coffee Mug
heat activated coffee mug!
Eye’m Wide Awake!: Heat Activated Coffee Mug
SAD: Heat Activated Disappearing Dino Mug
Heat-activated thermal mug. The battery level even goes down as you drink it. Awesome!
This is hilarious!
Dear Van Gogh cup by Mike Mak #cup #sign and #design #art
Day Night Mug - changes from light to dark with heated liquid
Pixel Heart Heat Changing Mug
Monday Morning Mug
Battery image appears when you pour in hot liquid, levels go down as your hot drink goes down. Maybe...coolest coffee mug ever.