Many classrooms have job charts, and I love the way that this one is organized. Each student has a number, and where their clothespin is indicates which job they have. The time period for how long students have each job can be tweaked (one week, two weeks, etc.). The teacher doesn't even need to worry about changing the jobs because there is a job for that too!
I got this idea from Ms. Hansen's class at Spicewood Elementary in Round Rock ISD.