Integrated Approaches to Participatory Development (IAPAD) – Participatory Avenues acts as focal point for sharing information and technical progress on community-based mapping and Public Participation GIS (PPGIS). The website provides ample documentation on Participatory 3D Modelling (P3DM), an efficient tool for merging indigenous technical knowledge and traditional spatial information. P3DM applications include community-based natural resources management, collaborative research and planning, resource use, control and tenure, and related conflict management.
Check out their Mapping Toolbox: http://www.iapad.org/p3dm-handbook/english-version/