"I have on my wrist a watch, made by a prestigious Muggle company called Casio. It has a little calculator on it, enabling you to do simple mathematics in the very palm of your hand! Can you even imagine the quaintness of the Muggle who came up with that one!? Priceless item in the Muggle world, I am sure. I also have a jar of life-giving air, taken from the very top of Ben Nevis, itself ... and I couldn't possibly put a value on that, either. For the safe return of my wife ... you may have one of those things."