put some new shoes on
This is a concept for Cradle to Cradle shoes. The fabric depends on the distribution model. It is either fully organic and the whole shoe can be composted, or a pure synthetic and will be separated when the shoe gets back to the producer, e.g. via some kind of desposit. As diversity is the goal these are two possible solutions for the sole.
One is out of cork and latex, some kind of a modern “Birkenstock” sneaker.
The other one is a mushroom, grown in a shape and maybe even grown into the fabric. Inspiration from here.