I have two memory foam pillows on my bed--one contoured and smaller than the other, one larger and puffier/softer--but use only one (usually the softer, larger one). I don't know how to use both at the same time.
I only ever bought one set and still have every piece. All other cookware I acquired as individual pieces as my needs evolved. And now I have too much shit, because my eating habits changed.
How many wrist watches do you have and how any of them are still ticking ?