I have these at the back of my classroom on a bulletin board. I think it is part of the student's job to keep the class running smoothly and organized. Students get to choose the 4 jobs that they want to rotate through at the beginning of the year using Google Forms. Then, at the beginning of every quarter, student's job's change.
The jobs that I have put together are more appropriate to Middle Schoolers.
Please let me know if you would like to see some added/taken away and I can do that for you! I can also change colors on these.