Sometimes nature gives #frugal solutions. We just have to be aware!
Article in The Economist describes how Syrian researchers are using date stones to suck up toxic materials.
“To Discover how to use a waste material to clean up hazardous chemicals is a notable achievement. To do so while working in a war zone is doubly impressive. …Over the past four years Dr Hanano, who works in the commission’s molecular-biology department, and his colleagues have developed a way to use the stones (or pits) of dates, a waste product of the fruit-packing industry, to clean up dioxins..”