Your really not looking for boxes, you're looking for bags. Cloth. Every silversmith I've ever known, that's two

, kept their wares in bags made of velvet. Velvet is cheap to buy and easy to sew, so I'm told, both of these people either made their own or found someone to sew a few up for them.
They also used anti-tarnish "strips" they bought at the supply stores. (The same place they bought the clasps and joiners and such. As well as those little sacks of white stuff, desiccant(?), to absorb the moisture out of the air.
Joe(you can always put bags in boxes)Nation