I always hated when the apple cobbler or other sugary dessert bled over from its section of the tray into the main course of salisbury steak and mashed potatoes or whatever. Of course, thinking back now -- the mashed potatoes always tasted awful like cardboard, so perhaps I shouldn't have cared that the stuff was getting all mixed :-)
Eau contraire, in 1976 I was delivering J&B's pizza to save up for college.
And our freezer was filled with TV dinners. We had 'TV Trays'. Today, we have trays for our notebook computers: http://www.aliexpress.com/popular/notebook-computer-stands.h...