2x2 grid featuring 4 important years in history and their most important inventions, each as a 3D typographic sculpture of a letter/number formed by a dense pile of era-themed objects, chaotic but legible assemblage, realistic textures like plastic, rust and wood with occlusion between stacked items, three-point studio lighting with softbox overhead on a clean isolated background, isometric front-facing Cinema 4D render with ambient occlusion, 8K, Adobe Substance materials