I picked up a Bushnell Pro flashlight from the sporting goods section of WalMart for $20.  It has a Cree LED that is advertised as emitting 100 lumens of white light with an endurance of 3.5 hours on two easy to find AAA size batteries.  It is made of aircraft grade aluminum, has a momentary on / constant on end-cap switch, and has a pocket clip.  Bushnell backs it up with a one year warranty.

The light is very compact and very light weight.  It appears well made.  While I’m sometimes skeptical of the advertised brightness of flashlights, this light is bright and is probably close to the advertised 100 lumens.  The light is plenty bright for the its size, but the beam is widely dispersed and not as tightly focused or strong as I would normally like for tactical or emergency use.  It is, however, perfect as an inexpensive, general use or backup flashlight carried in purse or pocket.