Marginalised youth in resource-constrained vocational education and training (VET) centres struggle to create engineering products and services with entrepreneurial value. This is due to limitations in the vocational engineering curriculum in addressing real community needs, exacerbated by inadequate resources, limited technology access, and other socio-economic challenges. This paper explores how the vocational engineering programme curriculum can be enhanced to improve learners’ capabilities to create engineering solutions with entrepreneurial value tailored for low-income consumers. The approach explores the Learning Factory (LF) concept, where design optimization strategies are investigated, rooted in sustainable humanitarian engineering, cost-effective materials, and energy-efficient production methods. The research entails enhancing the vocational curriculum by integrating authentic, real-world projects in real settings, giving students hands-on experience with engineering and business practices. The proposed methodology allows for a participatory approach to be explored in engaging local communities and stakeholders, ensuring the solutions fit the region's cultural and economic needs. The research highlights challenges and opportunities in VET institutions in Western Kenya and ways to optimise their engineering design and production processes. Additionally, this study offers insights for educators, policymakers, and practitioners in similar resource-limited settings. This study explores how a traditional hands-on, project-based approach complements the principles of learning factories, offering a practical model for fostering innovation and skill development in resource-constrained vocational settings.