I have a rubbish free lunch every day. To have a rubbish free lunch you have to have no rubbish and no mess! My advice to you is to bring containers and then you can reuse them.
Every rubbish Free Wednesday the Environmental Leaders collect the data:
Number of students with rubbish free snack and rubbish free lunch
Number of studets with rubbish free both.
Total number of students in the class.
The winning class is announced at the Friday Assembly!