A recent thread about someone being killed while riding at 1am reminded me of riding at night at Burning Man (BM). There are no lights at BM and so everyone lights up their bikes with stuff called El-Wire. The plastic wire comes in any length and is powered by batteries (My 6-foot strand was powered with a single AA battery). It comes in all kinds of colors and is flexible enough to put into all kinds of configurations. When it is turned on, it looks like thin strands of neon light.
Of course, at BM there are no limits to what people do with the wire (birds, insects, artwork). But, if night riding is a possibility, el-wire might be a good thing to have.
Here is a link:http://www.thatscoolwire.com/?gclid=...FRdbbQodFyAkBg
Here's an idea of what you can do (and the thumping music that goes on 24x7 at BM): http://www.youtube.com/watch?v=-PORxJCF-Mg