I use the the Igloo 60qt cube cooler for a water bath. Here is the wally world link.
Most coolers don't give you a good height to submerge the cooler in. This cooler is taller than most, although not quite tall enough to put the lid down, but the lid pops off easily enough and you can put a piece of styrofoam over the top with a hole cut out for the neck of the carboy. A few ice cubes or frozen water bottles will knock your temp down a couple degrees and it will hold for several hours before you need to put more ice in it.
Primary: German Hef, Belgian IPA, Scottish 80, Belgian Dubbel
On Tap: Oatmeal Stout, Vanilla Oatmeal Stout, Belgian Dark Strong, Munich Dunkel, Dunkel Weizen, Oktoberfest, Bock, IPA, Black IPA, English IPA, Pale Ale
Using the mind to look for reality is delusion. Using your senses to look for reality is awareness.
"One time I was so desperate for a beer I snuck into the football stadium and ate the dirt under the bleachers." Homer Simpson
Life, Liberty, and the Pursuit of Hoppiness