Nuestros Suelos (Our Soils) is a Chilean research initiative aiming at designing, testing and disseminating a toolkit for participative soil degradation assessment based on a citizen science sensibility and low-cost technologies. The kit includes three main components. First, a set of participatory methodologies for the systematization of local knowledge and care practices regarding soils. Second, a series of low-cost technologies for the qualitative assessment of some key indicators of soil degradation, in particular fertility (organic matter, carbonates, N-P-K, and pH) and the presence of heavy metals (Copper and Arsenic). Finally, a board game that seeks to help members of the participating communities to integrate and use the knowledge acquired to deal with specific challenges related to soil degradation.