The "Waste to Wealth" highlights the application of STEM knowledge in transformative approach to managing waste in addressing environmental challenges. Each component of STEM is linked together in various pipelines to turn theoretical knowledge into innovative action. This book not only helped us find creative ways to manage waste but also showed us how STEM can empower secondary school students, create sustainable systems, and transform daily problems into opportunities for growth and impact. STEM activities make learning fun and exciting at school by turning real-world problems into hands-on challenges. They help students explore science, technology, engineering, and math in creative ways- through experiments, building projects, and teamwork, making learning more interactive, meaningful, and enjoyable. "Through designed activities, key lesson emerged stronger public private awareness, enhancing education around waste management. and providing incentives for green innovation are critical steps forward. Ultimately, the success of "Waste to Wealth" lies not just in technology, but in our collective mindset. By redefining waste as a resource, we pave the way toward a cleaner, more inclusive, and regenerative future-where every discarded item holds the potential for value creation and positive change.