Here's another great packaging innovation called the Green Box. Basically it's a regular pizza box that is pre-perforated so it can serve several uses: 1) Pizza Box 2) Dinner Plates & 3) Space Saving Storage Box.
Here's how it works. Your pizza is delivered in the Green Box. Rip the top off, and tear along the perforated lines to make 4 cardboard plates to eat off of. This saves the use of paper plates or the use (and eventual washing) of your dinner plates. Next, if there's any left over, the remaining half of the box breaks down into a half sized box so you can fold it up and easily store it in your fridge, saving you the use of tupperware (and eventual washing) or foil/plastic wrap. When all is said and done, throw the used cardboard into the recycling bin.
The company that designed this, Eco Incorperated, has several patents pending and they are looking for business to license the design. Until they sell this design to one of the big pizza chains or pizza box suppliers you probably won't be seeing a green box. Until then, if you are handy with a knife you could probably just use this as inspiration and hack up your next pizza box to save some flatware and valuable fridge space.