How to make a moldable castable rubber (homemade Sugru, Oogroo)

This sprang out of an idea suggested to me by mnsman1. Its really easy. You just add cornflower to silicon rubber you get from the diy store and maybe some colour. It makes a moldable, castable rubber that can be used for a hundred things - like gaskets, rubber parts, feet, sculptures or molds - a very interesting little idea - the kind that i wish had been mine!