My teacher uses a Noise Meter similar to this one. The Noise Meter is a cool way to remind students the correct noise level that they should be using! You just use the paper clip and move it to the appropriate noise level the students should be using.
Cassie Cerulli Lunch Menu Display - could display outside the classroom or in a special part of the classroom on a bulletin board. This is such a great way to see the lunch menu and fun for the students to look at.
Mary Berry Cooks: Rich chocolate tray bake with feathered icing
Golden Spatula Award: Reward for good behavior in cafeteria, emphasizing good character instead of "performance". Spray-paint dollar store spatula, add stars, glitter and ribbon. Great way to acknowledge the quieter students.
School Lunch Peanut Butter Bars ~ A former lunch lady. She took the cafeteria's peanut butter bar recipe, and scaled it down, and came up with this gem. They are the best peanut butter bars I have ever tasted.