Wastes should not be wasted - it might be opportunities for a brighter future. That is the idea behind Waste4Knowledge, an IoT-driven kiosk that turns discarded items like plastic bottle aluminum cans into opportunities for children to learn and grow. The system incentivizes children to recycle waste materials by rewarding them with items, stationeries, or access to education contents. It uses IoT sensors and an ESP32 microcontroller to check the recyclables and hand out rewards without a hitch. Its modular hardware design, combined with Firebase software, allows real-time data tracking, enabling administrators to analyze recycling trends, adjust reward strategies, and optimize the user experience dynamically. By integrating recycling and education, the W4K system offers opportunities to underprivileged children, fosters environmental responsibility, and inspires positive community behavior. Its adaptable design positions it as a scalable solution for sustainable development initiatives worldwide.