To fold an aluminum foil boat for a party or celebration, follow these steps: 1. Start with a large piece of aluminum foil, about 2 feet long. 2. Fold the foil in half lengthwise, creating a crease down the middle. 3. Unfold the foil and fold each side up to meet at the center crease, creating a boat-like shape. 4. Fold the ends of the foil up to create the boat's sides, ensuring they are symmetrical. 5. Gently press the foil to shape the boat, making sure the bottom is flat and even. 6. Use additional smaller pieces of foil to create decorative elements, like sails or flags, and attach them to the boat. 7. Place the boat on a flat surface or in a shallow dish for display at your party or celebration.