I keep this great little LED in my glove compartment, and it comes in handy, around 50 times a day.... or there abouts....
You buy it on ebay for around $6 delivered and it has two settings (besides off)
In the pic, the full array is illuminated, but flick the switch all the way to the other side, and only the centre two LEDs fire up. (Centre is off).
It even arrives with the 9V battery.
It's compactness and usefulness far outweigh its cost. Think of the uses... I velcroed one to my helmet to read tank bag maps at night whilst doing my Iron Butt ride attempt.
Ask me for a Bo Peep next time we meet.
Cheers, Diesel