This study aims to formulate knowledge regarding the creative processes in sustainable design through Practice-Led and Practice-Based Research approaches, using styrofoam waste utilization as a case study. As a non-biodegradable solid waste, the volume of styrofoam continues to escalate due to its extensive use in the industrial and household packaging sectors. This research explores the potential of such waste as a primary material for three-dimensional wall decorations that integrate sustainability principles. Through an exploratory method, the study encompasses stages of form development, surface design treatment using cement coating, and the application of spray-painting techniques to create dynamic visual effects. Experimental results demonstrate that styrofoam waste can be transformed into aesthetic elements characterized by structural integrity and artistic surface values. Beyond expanding the horizons of art and design practice, this research offers a tangible contribution to mitigating plastic-based waste that adversely affects the environment and health. Both theoretically and practically, this study generates novelty in material development, techniques, and waste-based design structures that support the advancement of Sustainable Design within the 3R (Reduce, Reuse, Recycle) framework applicable to urban societies.
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