We read The Biggest Pumpkin Ever today. It's about two mice who both want the same big pumpkin. They decide working together to grow the biggest pumpkin (and have the biggest jack-o-lantern) is the best solution.
When we finished the book, we "grew" our own pumpkin by blowing up an orange balloon. I am the one who drew the face on it because 1) Drew was not feeling artistic today and 2) three words: black. permanent. marker.
He sure had a great time when we were bouncing the balloon back and forth though!