Broke the original 'read-light' key chain holder on this garage door opener from Sears. As I no longer shop at Sears and found the 'replacement' cost of new opener obnoxiously expensive I developed my own.

It's basic, but it works and I generate a new housing for the electronics in under an hour. The tolerances are tight and tried this on a couple of different materials successfully.

Updated with my free cad files. Not sure why this was suddenly so popular (for my stuff anyway) I'm sure someone else can do a better job and can work from my humble beginnings.