Plastics have become part of our culture. Just about everybody wears it on their bodies. As for environmentally friendly alternatives, the German company Anker

Plastics have become part of our culture. Just about everybody wears it on their bodies. As for environmentally friendly alternatives, the German company Anker offers “real” bricks made of a mixture of quartz sand, chalk, and linseed oil. https://en.wikipedia.org/wiki/Anchor_Stone_Blocks https://en.wikipedia.org/wiki/Anchor_Stone_Blocks