A plate is provided for concealing an inlet of an overflow pipe in a bathtub. The invention thus relates to the plants, seeds and tissue cultures of the variety CH134921, and to methods for producing a corn plant produced by crossing a corn plant of variety CH134921 with itself or with another corn plant, such as a plant of another variety. The reaction also produces nanomaterials from a variety of other input materials, and by varying the process parameters, the type and morphology of the carbon nanoproducts and other nanoproducts can be controlled.