I have over a dozen I guess, kinda stopped counting. I have 1 gallon glass jugs, a bunch of 3 gallon water jugs, better bottles and a mr beer fermenter for 2.5 gallon batches, at least 3 buckets, 1 glass carboy, 1 oak barrel, and I can't even tell you how many 5 and 6 gallon better bottles I own. I have wines and beers and meads and ciders of all different sizes usually going at any given time, spread out over my condo, my storage room in the basement, and when I had one, at my girlfriend's place, so it's kinda hard to keep track.