We adore this self-extinguishing candle by Norwegian designer Lars Beller Fjetland that automatically puts out a flame when the wick burns out. It does this by using a pendulum with a needle, like a little mini Rube Goldberg contraption.
It just launched at the Maison & Objet trade show in Paris and will be distributed worldwide by Hay soon. Keep an eye out for the genius product and we'll be sure to update this post with a link to buy it online once that happens. Hat tip to Dezeen and Jason Fried for the find.