A tri-corner hat, a pot of lobsters or other shellfish (national media loves talking about seafood), or a giant "U".
Those are the only acceptable options.
How about actual land?
I was thinking along the same lines. Make the trophy have the Number One on the top. The one stands for the one win the other team will have that season when they win this game.We can label the winner the 2nd worst team in FBS football. Quite the accomplishment.