If you have any dollar stores near you, keep an eye out for their bottled water. They have 1 gallon clear PETE bottles that are tallish (5.5x5.5" x 12"tall) and without a built-in handle like the milk jugs.

Their 'handle' is a sturdy plastic ring attached to the collar around the neck. Compact, easy to store.

Lily, that Humanure Handbook is GREAT!

Sue