What if McDonald’s next great innovation had nothing to do with food? That’s the conceit of this ad from Belgium showing McD’s surprising customers with a 3-meter (about 10-foot) tray. The ...

2. Oster Buffet Server Warming Tray For something a little more advanced, this 20 x 13-inch Oster tray holds three 2.5 quart trays, complete with domed lids to help trap heat and moisture.

FARGO - Every weekday in an elementary school kitchen here, a worker fills a plastic tray with the day's lunch offerings and seals, labels and places it in a freezer - all in the name of food safety.