Although, should I stumble upon some one gallon glass carboys I guess i´ll try them out also. It would be nice to be able to see the stuff along the way. They aren´t very common here though, and are around 15 dollar a piece new, plus a hefty fragile postage from across the country!
1 gallon is about 4 liters. Try a 4-liter plastic water bottle... the nice part about it is that you can throw it away once you're done with it...