I mainly make various tool cases/bags/ditty bags in very rough Canvas (up to 978gr/m), sometimes with leather elements. It started out of a personal need to store, for example, my carving irons.
The bags are mostly sewn by machine, leather details by hand.
The picture at the top shows one of the first ditty bags I made in the early 80s. Still using it to store rope in different dimensions. The rope ends are led out through the holes, so I don't have to rummage through the bag for the right dimension.