Yes, Beans although they can make you Burp Both Ends, still if you have plenty of Andrex....
A light Blanket for me - easier to dry than a duvet and more uses ( makeshift hammock, bag, cloak etc) than a sleeping bag.
Would also consider an inflatable Boat. But not without oars, so have to see how much room I have left when we reach 'O'.
Good thread, RobinW