The world consumes an average of 400 billion cups of coffee every year, and each ton of coffee beans can produce 650 kilograms of coffee grounds. If only waste, landfill and incineration are used to dispose of coffee residue, it will not only pollute the environment, but also waste resources. Therefore, through design and material experiments, I make coffee residue break away from the original concept of "garbage" and transform it into "sustainable things", and link senses such as smell, touch and vision to give sustainable new youth a new user experience. That is to say, coffee grounds are used to make bookmarks for "leaves falling to their roots", "good seedlings and huaixin" seedling cups, "Xiangshan LAMP" fragrance lamps, "COOL throwing" cat litter pots and "sun and moon dyeing" fragrance expanders. That is, it can effectively recycle and reuse the natural resource of coffee grounds, add value to these ecological materials, and achieve the purpose of resource recycling and sustainable use, and reduce the use of traditional materials such as plastics, rubber, and metals.