When I was teaching, my students LOVED this reward. As we were going to lunch, I was always watching for "A YES Line" ~ our class term for a terrific line in the hallway. When we got to lunch, the SILENT, UNSPOKEN QUESTION was, "Were we good?" If the answer was YES, they were allowed to sit with a friend at lunch. :)
You can download a poster here at my blog!
Your kids will ♥love it and it is FREE!