I'm surprised no one has mentioned a large number of those very nice modern LED flashlights.    I'm a big fan of the Coast Cutlery ones... $40 from Home Depot (I know, don't get me started on the undocumented immigrants outside looking for work) and a ridiculous number of lumens... daylight visible.    Power source is AAA batteries x3. Couple that with a solar charger for NiMH AAA batteries and you'll pretty much have light forever.