This looks like a good project for anyone who rides a bicycle at night. I really like the copper housing. Just remember to polyurethane the copper if you don’t want it turning green. Personally, I think the aged green/brown patina would look really cool.
For those of us traveling by non-motorized conveyance (bicycle e.g.), visibility is important in both forenoon and post-twilight conditions. The best way to ensure such visibility is through the use of excessively bright lights, of which the latest light emitting diodes (LEDs) are the acme. The following account will detail the process of building an LED based head-light capable of of more than 500 lumens of output using about 6W of electrical power. For comparison, this is the same output as a typical 45W halogen bulb.
More about making a DIY: High power LED bike light