I'm still looking for my ideal lighting system, but in the meantime I took an unexpected night time ride. My son saw me getting ready to ride an decided that he wanted to ride too. So, after doing a slow couple of miles with him, I was free to take my ride. The problem was that I only had about 15 minutes of daylight left. I have a good flashlight, a LED Lenser L6, so I mounted it on my handlebars with a strap that I picked up off of Ebay. It only took about 15 seconds to mount it and I was set. It isn't an ideal setup, but it worked well enough for that ride.

The L6 provides 100 lumens, runs on 2 AA cells, and has an adjustable beam. So it it plenty bright enough, has good run time and you can adjust it for the amount of throw / flood that you want.

I don't know why the straps are called silicone bandages, but they work well for temporarily mounting things on your bike.