After printing the original, I realized that E27 is a European standard and I would not be able to easily get hardware for it in North America. This base uses hardware that I was able to find at my local Home Depot store.
https://www.homedepot.com/p/Feit-Electric-7-Watt-Equivalent-C7-2700K-Clear-LED-E12-Night-Light-Bulb-2-Pack-BP7C7-827-LED-2-HDRP/309015463
I will also include the FreeCAD files as a starting point if you need to modify it for some other hardware.
The author remixed this model.