Check out this really cool looking tea kettle called “One” by Vessel Ideation, Inc. I think the idea is really interesting, not to mention that it has heat sensitive ink on it! Essentially you add the water up at the top and then as the water boils inside – the design appears, letting the user know that the water is hot enough. The designs are really cool, especially the Space Invader and the Hello Kitty ones!
Check out more here.