Hourglass Nightlight: Form serving function...

From designer Sun-Young Lee on Yanko Design (and through Gizmodo), the Hourglass Worth of Light provides wonderful clarity of function to the user. There's no doubt in any user's mind that this baby will stay lit until the sand runs out, and no question that it'll then turn itself off. This is accomplished by calling iconic and well-understood forms to task (who doesn't recognize an hourglass?), rather than creating new instructions, controls, or displays for the purpose. The result is an immediately understood function - and no extra visual garbage. I haven't seen a better example of form serving function in quite a while!