Some interesting quotes from him in this article:
http://www.express.co.uk/posts/view/317242/Prince-Charles-My-boys-are-always-pulling-my-leg
"I hate throwing things away. I am always trying to find ways of re-using things. There are bits of this, bits of that everywhere. For example, we’ve had to take curtains down in my bathroom and I was seeing how we could make cushions out of them."