Abstract: This disclosure describes nontoxic cushion mats and methods of making and using them. Nontoxic CorkiBoo mixtures composed of cork granules and bamboo, cotton, or polyester fibers, and methods of making the mixtures are disclosed. Cushions mats are constructed using single layers of CorkiBoo mixtures, or multiple layers of cushion sheets composed of one or more types of cork granules, bamboo, cotton, or polyester fibers, CorkiBoo mixtures, or blends of them. The hardness level of each of the cushion layers is determined in advance. Covers can be used to enclose the cushions. The cushion mats can be modular or non-modular. For modular cushion mats, the modules can be connected using enclosing covers attached with snaps or hook-and-loop strips. Modules of the cushion mats can be used to assemble 3-dimensional polygons, which may be used as toys or temporary portable cribs.