Abstract: This invention provides an approach of disposing waste for marking different products of waste sources with different color classification iconic codes at the time of production. The color classification iconic code contains at least one specific color used to indicate the category of the product, and this specific color has the maximum distribution area in the color classification iconic code or occupies the entire color classification iconic code. Various containers used to contain different wastes are marked with the corresponding colors that indicate product categories in the color classification iconic codes. With the approach of disposing waste in this invention, even the children at 3-5 years old and illiterates can classify the waste and discard it into the matched trash can according to the color classification iconic code. In this way, the same type of waste can be collected together conveniently for recycling.

Abstract: A bed sheet clamp includes a first clamp plate and a second clamp plate. The first clamp plate and second clamp plate are hinged or joined at 90 degrees in a fixed manner. The bed sheet clamp features a simple structure. It is necessary to put the edge of a bed sheet into the head of a bed or near the wall, just insert the edge of the bed sheet into the two hinged clamp plates, coil it, and insert both the bed sheet clamp and the bed sheet into the gap near the head of the bed or the wall. For any part of the bed sheet protruding out of the mattress, use the bed sheet clamp joined at 90 degrees. The use of the bed sheet clamp not only facilitates making the bed, but also increases the force retaining the edge of the bed sheet, so that the bed sheet is tightened and the properly arranged bed sheet will not get loose easily. In this way, one can make the bed clean and tidy.