Grassroots innovation is a modality of inclusive innovation that enables extremely affordable, niche-adapted solutions to local problems, often unaided by public sector or outsiders. In a context of rising income disparity among the have and have-nots, every effort should be made to convert the ideas and innovations of knowledge-rich but economically poor individuals and communities into viable means of raising income, addressing social needs, and conserving the environment. While grassroots innovation are typically bottom-up initiatives, public policies can also support the emergence, recognition and diffusion of grassroots innovations. The journey of developing a grassroots idea or invention into a viable product or service for commercial or social diffusion requires support from many actors at different stages and levels.