Not seen it yet but there is probably still an eclectic mix of professions amongst the aircrew.
The staff coffee bar at Finningley (mining area a bit like a prison camp
) you could go in and ask for advice from all and sundry.
There were financial advisors, chartered surveyors, picture frames, self-builders, boat owners, landscape gardeners, etc etc. The trades or professions that many had been in before joining the RAF was huge.
PS
One could have made a radio from the milk tins and potatoes.