Looked around at the various commercially produced reflectors and either they were spendy, or flat wouldn't work in my application. Cheap disposble single use type foil pie tins looked to solve my problem nicely. Take a razor knife and cut a small "X" shape right in the middle of the pie tin. Then just kinda cram the bulb through the "X" Fold the resulting tabs back onto the tin and re-install the bulb. Badda bing badda boom, works good and cost next to nothing.