Oh, maybe an entire jaw surgery cookbook? Actually, scratch that, you two should do an entire jaw surgery book! Anywhere from recipes that are particle-free, to recipes that can be eaten through a syringe, to dishes that are dairy free (apparently dairy gives everyone pimples now), a section of soft foods that still have substance (pulled pork dishes!), etc.
Another part of the book could be discussing all things surgery: how to work with an orthodontist, treatment plans, surgical movements, black triangles, counterclockwise rotation, joint stuff, etc.
I suppose the market for a book like this would be pretty small, but we would all buy it! Even better if you could actually sell it at the surgeons office!