Oh, I forgot. Old manual cameras with metal bodies. I just gave away a a 1970s Minolta SRT which was still working perfectly (it did need a minor mod with the addition of a resistor so that the light meter would work with modern batteries).
A huge contrast to current DSLRs, which go from cutting edge to average in 2-3 years, and go obsolete by about the fifth year.
Professional lenses seem to last forever too. I have Canon L lenses from 20 years ago that are still working well, though they are no longer on the support list from Canon.