ON / OFF coffee mug


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.

(via neatorama)

15 Comments leave a comment below

  1. I love that but I’m a sucker for type on a coffee mug.

  2. I think it would be better if it said full/empty, or hot/cold. Cool idea, and definitely classier than the ones where the lady strips as the cup gets hotter.

  3. J’adore votre blog, il est vraiment fun(sorry, next time in english)

  4. Simon: the on/off joke isn’t applicatble to the cup itself, but to the drinker of its delicious contents!

  5. Thank God the type is not in comic sans or arial!

  6. This is so cool I am tempted to ignore the $25 sticker. Tempted …..

  7. How can I order this cup?
    I like it ;-)

  8. How to buy it?

  9. Yes, very cool. Would love to make it a gift..how can I buy?

  10. I´d love to have one. How can I buy it???

  11. actually there are cups online that say hot and cold instead of on and off. do a search in web and you should get it.

  12. I was wondering how much this cup cost and if I would be able to get 4. Please let me know asap what you find out. thanks.

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