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On/Off Coffee Mug



on_off_mug.jpg

This clever mug automatically displays “OFF” when it is empty and ‘ON” when it is filled with coffee or tea. It is covered with a heat sensitive pigment which allows it to change from black to white or vice versa depending on whether it is filled or not. Charles & Marie are now selling the mug for $25.

Via: Charles & Marie


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Posted on December 3, 2007 at 10:28 am by Algonkin
Category: 1 Other Neat Things



6 comments to "On/Off Coffee Mug"

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