In a world increasingly reliant on electrical energy and burdened by the effects of climate change, there is a growing need to seek environmentally friendly alternatives based on the principles of sustainable design and traditional knowledge. Among these innovative solutions, the "clay pot refrigerator" stands out as a simple and effective method for preserving food without the need for electricity, relying on the principles of evaporative cooling. Traditionally known in some cultures as the "Zeer Pot Cooler," this primitive cooling device consists of two clay pots of different sizes, with the smaller pot placed inside the larger one and the space between them filled with wet sand. The design works on the principle of evaporation: as the water in the sand evaporates, it draws heat away from the inner pot, thereby lowering the temperature of its contents. The clay pot refrigerator embodies key principles of sustainable design, including the use of local and natural materials like clay, water, and sand; reliance on non-electric energy sources; full recyclability of materials after the product's lifespan; and a low-cost, easy-to-manufacture design suitable for rural communities and low-income areas. The usage process involves two clay pots (one smaller than the other), clean sand, a damp cotton cloth, and a lid made of clay, straw, or wood. The smaller pot is placed inside the larger one, the space between them is filled with wet sand, and food is stored in the inner pot. The opening is covered with a damp cloth or a suitable lid. The sand must be kept moist to maintain continuous evaporation. The clay pot refrigerator is effective for storing vegetables, fruits, milk, cheese, and even certain medications, capable of reducing temperatures by 10 to 15 degrees Celsius compared to ambient temperatures, making it ideal for hot and dry climates. This type of refrigerator offers a rich educational opportunity in industrial design and environmental technologies, enabling students to understand the principles of heat transfer and natural cooling, how to integrate design with environmental factors, the aesthetic value of ceramics in functional design, and the importance of self-reliance and local innovation. The clay pot refrigerator is not just a tool for preserving food; it is a symbol of design inspired by nature, respectful of the environment, and rooted in self-sufficiency. Revisiting such technologies represents a vital step toward a more balanced future where traditional wisdom meets modern design thinking.<br /><br />Almustaqbal University, The First University in Iraq.