As I was driving one of my sons to school this morning I saw that someone had out to the curb - 6 hanging baskets. On my way back, I did a little discreet garbage picking. And then I had an idea. I thought, why not fill the basket with the peat and run water over it, kneading it until it was thoroughly moist and pouring water over it so that the impurities were rinsed away. Then I could mix in sand on top and have a ready made CP vessel.