I modified the base to hold an E14 lamp socket such as these:

https://www.amazon.de/dp/B00XZTWEDO?psc=1&ref=ppx_yo2ov_dt_b_product_details

I also added a hole for the power cable.

The holes in the bottom are made to fit M4 heat inserts. The diameter from hole to hole is 52mm. So depending on your E14 socket you might want to change that.

I also made a slightly thinner version of the diffuser to make it a bit brighter if you print it in white filament instead of transparent filament.