Lead sheet.
The malleability of these thin lead sheets means they can be used in various model-making projects including creating roofing, flashing or ornate architectural features on architectural models, realistic metal signage on dioramas, intricate details on scale vehicles, dollshouse furniture details and armor & weaponry on historic miniature figures.
Remember, while lead is versatile, it's also important to handle it carefully due to its toxicity. Ensure proper ventilation and consider using gloves or washing hands thoroughly after handling.