Bean pot
http://cdn2.bigcommerce.com/server53...0.1280.JPG?c=2
Pitcher
http://www.relicsaz.com/uploads/thum...2.original.jpg
But you could always just take it as written. It's a giant chamber pot, which is to say a chamber pot for giants. Which gigantic contents explains why it needs three handles to lift. One handle for each human slave porter, perhaps.