There is a UK company called Globetrotter that make suitcases mainly from vulcanised fibreboard and vegetable tanned leather.
Here is a cool video showcasing some of the processes in making a case. I particularly like the machine they use to compress and wet form the leather after it has been cased in water.
What do you reckon? (other than the music is annoying of course).
Great video. Fun to see how all the pieces come together. Makes me want to buy more machinery! And that‘s not good.