I always loved making English Muffin pizzas as a kid. Actually, they are still fun to make!
My sister really came up with this concept for the party. First, we put a few spoonfuls of tomato sauce on each muffin half, and then sprinkled on some mozzarella cheese. The pizza faces were given olive eyes, a carrot nose, a green bean mouth, and mushroom eyebrows. We baked them at 350-400F for about 15 minutes, and a kid friendly lunch was served. But I saw plenty of adults grabbing for these as well!