How to Serve Pizza, Store Leftovers, and Not Use a Single Dish

I have a weird thing about dishes: I don't like to use them if I don't have to.  If I make myself a sandwich for lunch, I put it on a paper towel.  If I need a glass of water, I'll rinse out a used one from the night before, rather than grabbing a clean one from the cupboard.  I know, I'm an odd fellow.  HOWEVER, this method for serving pizza is right up my alley, and I think you'll like it too!

Hey, you're gonna throw the box out anyway; so why not get as much use out of it as you can?