I know this sounds a bit crazy but. . .
What if you took an old chest freezer, put in a few inches of
water, and opened it up on a winter night? Then you could shut it during the day, etc, adding more water separated by sheets of plastic when each layer was frozen solid. Then, when the weather got too warm in the spring, you could shut it up, added extra insulation, and roll it (on big castors) into a
root cellar or other cool place for storage?
Or maybe just froze ice in molds and moved it into the chest freezer for storage?
Then the ice could be used in an interior icebox.