Once we find something to hold we then also find need a place where to hold it for longer periods. Kangaroos have pouch, birds use nest, bees build honeycombs, and squirrels hide food into all kinds of holes they can find. So does people. We store things in all kinds of containers.
Circle somewhat closed and we came back to rack. The whole chain of association was: hook > cloth > paper > sign > game > container. And why? Cloths are hanged on hooks, paper is made from rags, signs are drawn on paper, basket ball was closest match we could find for that particular sign, basket ball is nothing without basket, and pouch like things we use on our cloths.