These are so great! These are tin Pantone boxes large enough to hold stacks of paper up to 8.5″ x 11″ (x 4″ tall). Available in Pantone 14-0848 (yellow), 377 C (green), Cool Gray 10 C, 672 C (pink), 268 C (purple), and 186 C (red). For sale for $20 a box on Uncommon Goods.