I have copper pipe caps and already had some aluminum square stock sitting around from my WRX camera mount I previously made. It fits perfectly. I just need a power socket for it, some rugged power cable with proper end attachments and some Arctic Alumina Adhesive to glue it all together. This first light will be a helmet light. The next will mount on the handle bars.
I have 2 more emitters on order, but they are a different (cheaper) brand (SSC), but should be similarly bright. The new LEDs also have a different (cheaper) driver to go with them. This setup requires more work for me but is much more compact.