We held an exhibition showcasing recycling-oriented industries from across Japan. In the interior design, we addressed the critical issue of one million tons of waste roof tiles discarded annually, contributing to the depletion of landfill sites within 20 years. Through repeated verifications, we focused on powder processing to highlight the unique colors, water absorption, and deodorizing properties of regional soils. Our solution to this long-standing roofing industry challenge gained significant attention, leading to new business opportunities and positively impacting society and industry.