I got a couple of 3 gallon buckets from the local IGA where I shop. The bakery goes through dozens, since supplies like filling and icing come packed in them. They have nice gasketed lids, just like the "Brew Bucket / Ale Pail" that are for sale. I drilled a 1/2" hole in the lid with a paddle bit, which is perfect for taking the rubber grommets that seal the airlock. The grommets may be purchased from Midwest. I immediately put it to use fermenting 3 gallons of cider. Works great; cost fifty cents for the grommet.