There’s a well-known national brand of frozen pizza that purports to be as good as delivery. Whether or not that is actually true is up to your own taste buds to decide (and determined by the quality of delivery in your area). One way to at least extend the illusion is with this affordable Insulated Pizza Delivery Bag. Yes, you can buy them.
The red insulated bag measures 20-inches by 20-inches, which is of course larger than most any frozen pizza one might come across. However, if one has designs on stocking up on frozen pizza and then passing them off as delivery, a little sleight of hand could do the trick. Just be sure to use a clean box.