No fancy freezer here, but since I'm into home improvement and have a lot of offcut insulation lying around I foamed/taped together a breadbox-sized cube that's around R10 and put my Vial Vaults boxes inside that in the freezer. Behind the ice cream for thermal mass since I can barely eat it now I'm sure that's overkill, even, for 1-2 years storage... but it's nice to be able to keep them nice and snug and cold!