This eco-friendly packaging ensures the notebook box is not discarded after product removal. Its unique structural design grants the packaging a renewed lifecycle by transforming it into a functional desk calendar. The highlight of this concept lies in its functional secondary use—reducing packaging waste through creative repurposing and fully embodying green, eco-friendly, and energy-efficient principles. By merging practicality with sustainability, the design revitalizes what would otherwise become waste, offering an innovative approach to environmentally conscious consumption.