Abstract: Modular containers that can be interconnected, for multiple uses of the type that, forming a bottle or similar thing, of structure and materials usually developed for their disposal, essentially includes a bottom and lateral walls finished in a top wall. This top wall is prolonged in a neck delimiting an access mouth to an interior or the container that can be shut by means of a cover that is removable. The lateral walls, as do those of the bottom and top, possess means of lateral and top interconnection with other containers of similar characteristics, including compatible recesses and salients and of reciprocal fit through initial, but not continuous pressure.