The SnowMiner from SnowPeak ($50) is a revolutionary lighting gadget that combines a headlamp and a lantern all in one tiny device. The head strap of the SnowMiner includes a hook to hang it up in a tent and use is as ambiant light. From a simple touch of your finger, the SnowMiner converts from a lantern to a powerful headlamp that can illuminate up to 40 meters ahead of you. The SnowMiner has 3 distinct lighting positions that can last from 55 hours to up to 250 hours for the lowest intensity setting. Here is a video that explains the SnowMiner concept.