you may as well plan that you'll be moving the ingots, even if you don't think you will. I have 50 to 60 lbs of ingots on a pallet type thing, then I stack the pallets 3 or 4 high. I used USPS Med flat rate boxes cut so they are 2" tall, then cut a piece of scrap 1/4" plywood in the bottom for support...works slick.