Hm...I'm thinking of something more obvious...like forgetting to pick up potatoes to make stew (though that takes too much time...)
How about a chicken dish (chicken pot pie or something) and they forgot to get the cranberry sauce?
Eggs with no ham
Grits with no gravy
Macaroni with no cheese!
Back to the Elves. I tink we know now why Rivendell has no outhouses. Rivendell needs no outhouses.