Except for whatever is in current rotation, all of my pipes are put away in pipe cases, which are cases with internal fitments to hold a pipe, 17 to 21 pipe per case, as well as a churchwarden pipe case. The vintage cased pipes are in one of several boxes, with a bit of cushioning around the cases. Some of my less favored pipes are stored in socks in another box. Nothing is left on a rack, or in sunlight. I understand the impulse to display one's collection. It's just not good for the pipes. Interestingly, of the several major collectors I've visited, none of them display their pipes.