There are two simple tools that I use in my kitchen almost every day. One is a brush from Mexico with very thick natural bristles. It works great to clean out a cast iron steel pan. I don’t use it for anything else. The other one is a Japanese vegetable brush. It also has natural bristles which have a great feel to them. Both brushes are made of only two materials – the bristle and a steel wire. It can hardly get any simpler than that.
The bristles of the Japanese brush are made out of coir, the fiber from the outer shell of a coconut. Coir is also used to manufacture robes, doormats and mattresses.
The Mexican brush is less elegant, but just as effective. The bristles are made out of roots.