I lucked out and found a N.O.S. dynamo hub front wheel in my size on that auctino place. It has a Shimano something or other hub that powers my B+M Lumotec something or other light. The hub and wheel ended up being about $45 shipped (but then I lucked out, remember) and the light I bought brand new at a local shop for around $40 or so.

Eventually, I will get a taillight that runs off the same set-up. Right now I have two flashing rear blinkers. I like having redundant tail-lights just in case something fails.

The light given off by the B+M light far outstrips any of the small-battery lights I have seen.