This paper reviews the methods and practices that reflect subconscious behaviours of people in daily lives. Cases, studied for this paper, show how practices of people living in poor settings, who are members of the base of the economic pyramid, contribute to designers, belonging to the top of the economic pyramid, in designing better products and systems. A new approach to the bottom-up innovation is suggested where the source of inspiration comes from the BoP populations to be implemented by ToP designers to generate ideas for BoP or ToP products.