@chas I've always flown with one carry on and put it under my seat.
Exception in the beginning when we'd have plastic "hard-sided" suitcases.
Suitcases of course were still "a thing".
They let you fly alone as a child (like 6 yrs old) back then.
I did and ditched the suitcase.
My dream bag is hard-case actually.
(I like leather, wood, stone, paper, like that, boxes; I'm a nerd).
It's the traditional briefcase at the TimeResistance site. Black.
The best quality craftsmanship, less than $600. Unreal.
Many here use a briefcase or have, but it's the last type of bag that would suit me.
In the old blues songs, you needed "a suitcase and a trunk".
I don't know who was supposed to be on hand to move the trunk.