The Tafari interlocking block is an innovative construction material developed in Uganda that uses recycled plastic waste and sand to create a mortar-free building solution. Its unique design, similar to Lego bricks, allows the blocks to snap together, significantly reducing construction time and costs. This method makes building more accessible and sustainable, particularly for low-income housing projects. The Tafari block is also praised for its strength and earthquake resistance, offering a safer and more durable alternative to traditional materials. Overall, it represents a clever fusion of environmental responsibility and practical engineering, addressing both plastic pollution and the need for affordable housing.