The solution turned out to be a one-gallon milk jug.
He found a note from her propped up against the milk jug: "Have to go home for a few days.
That time he got the milk jug stuck on his nose?
Hermione carried the milk jug over to the table and turned it upside down.
A book was propped up against a milk jug, and he was reading.
There was a note folded between the teapot and the milk jug.
People freak out if the hotel shampoo bottle isn't the size of a milk jug.
On it was a teapot, milk jug and two cups.
I reached in and hooked the handle of what had been a milk jug, gallon size.
Or the lovely, curved local milk jugs made of some very dark wood.