i use a tenba car case.
it is padded, has a center spot / 2 sides,
and comes with a lens case that has space for 3 boarded lenses.
i have maybe 5 or so lenses in there, lenswrapped, some small, some big.
the car case holds a rail camera inverted, or something more compact ..
as well as all your film holders, light meter, dark cloth and lunch