A few years ago it seemed like a good idea to buy a Thule roof rack, the idea being that the bars and fittings can go from car to car only requiring new mounting feet to fit the rack to specific cars. In the event things didn't quite work out so I have now bought two sets of bars and three sets of different mounts - fortunately the old mounts were snapped up by someone on gumtree with the same problem.
Things were apparently much simpler in the old days.
Charging a VHF radio from a power bank
4 hours ago