The builders covered our ceiling light in plaster and paint. They were special that way (#dontgetmestarted). Having considered and rejected a number of alternatives (mostly on the basis of price – 300chf for a light??), I spotted a metal colander on a trip to Geneva’s best charityshop.
With a hole drilled in the base and the old fixing threaded through, it does the job beautifully.
Best of all, when it’s switched on it makes a little star shape on the ceiling – love!