River Rock 1 watt LED Flashlight
Rock River 1 watt Luxeon LED Flashlight 42 Lumens, 1AA battery. $29 Target.
Not the brightest light in the world, but good run time at just more than 2 hours on the regulated circuit with a common AA. Its aluminum (2.8 oz with battery) and comes with a clip attached. Reverse clicky at the rear for on / off operation.