This system can help with keeping an effective classroom system, for collecting papers and passing them back in an effecient manner. I like it because it is different from the filing cabinet option and is better organized.
Easiest Classroom Mailboxes Ever (The Primary Peach)
Use a cover slip when collecting assignments. Grade the assignment, record the grade on the cover slip, then pass the papers back to students. No alphabetizing papers for the grade book. You can also see at a glance who didn't turn work in.