One thing about a shake flashlight – you do not have to worry about the batteries going out. A few days ago I was watching one of those TV shows about survival. The guy in the show was talking about urban survival in a post apocalyptic world.
While scavenging through a building, the star of the show was talking about his flashlight, which was a maglight that used D sized batteries. There was a mention of looking out for batteries for the flashlight. My thought was – why not use a shake flashlight? That way your not dependent on batteries.
Instead of having to rely on disposable batteries, look into getting a few hand crank – shake flashlights. That way you do not have to worry about scavenging batteries.