I just use a neoprene zippered 15" laptop case. Wallmart, $10 or so. A T2 fits inside perfectly, and the case doesn't take up much space in my gear box. Barrels go in a separate roll-up case, and the tank and hopper have a slot in a cardboard box which fits inside of my gear box.
To die for an idea; it is unquestionably noble. But how much nobler it would be if men died for ideas that were true?- H.L. Mencken