I would take some florist foam, soak it with Distilled water and put it in a bag. Don't close the bag though, just place it upright in the tupperware or a big air tight cooler. Then throw your cigars in. Make sure to open it every couple days, or at least once a week, to let fresh air in and refill the foam. You can also buy some spanish cedar cubes and throw them in to help maintain moisture