+1 on what "sivdrinks" said. In both summer and winter, mine is inside in a rope tub that you get at walmart for about $6-7. In the summer, I add saved personal size drink bottles filled with tapwater and frozen. Add one in AM and one in PM and keep alternating for the first four or five days.. at least. Cheap, doesn't require skills or much added space. I keep the water level in the bucket just below the stick-on thermometer so I don't get it wet. The personal drink bottles are a good size.. but, liter ones don't fit well. I also use the quart bottles that apple juice comes in.. the rectangular ones.. not round.. as they fit and have a larger ice capacity. Another alternative is to use the 1 gallon zip lock bags filled with water and frozen. Lay them flat in the freezer and they are easy to pack in the rope bucket. lots of alternatives.