Lamp of Learning
NOTHING is as annoying as inadequate lighting when you decide to read in bed at night. Eye strain, wrist cramp, and thought interruption are all symptoms of a poorly designed book light.
Whether camping with the kids at the Franklin Institute, assaulting a defective circuit breaker in a blacked-out debris strewn basement, or preserving your marriage during marathon midnight Machiavellian mental musings, a quality headlamp is an investment which, time after time, will pay handsome dividends.
Personally recommended is the Surefire variable-output LED series of headlamp. Designed for our nation’s fighting forces, this item has crossed over as a favorite of spelunkers, tradespeople, bookworms, and Hollywood [recently featured on “Glee” during the power blackout episode].
Variable-output means that you can crank the brightness from a super-dim to a blinding beam. LED means it is a low-power-consumption, practically indestructable light bulb. Meets Department of Defense qualifications for being US origin. Order a box  of Surefire CR123 batteries to go with it. You’ll be set for a couple of years.
The list price is pretty high, as one would expect for a device that can blink S-O-S for days on a tossing life raft, but that online photo video place has them for much less. I buy my batteries direct from Surefire, however, two boxes at a time, and suck up the delivery charge.