This document outlines a design exercise for students to design sustainable product-service systems and distributed renewable energy systems for households in African slums. Students will design systems for eating or clothing care in villages/townships in Botswana, Uganda, South Africa, or Kenya. The exercise will involve universities in those countries. It describes the main phases and processes of the design system, including strategic analysis, exploring opportunities, system concept design, system design, and communication. Tools are provided for each phase like stakeholder maps, interaction tables, and sustainability assessment checklists.