Here’s a genius idea that’s so simple I’m embarrassed that I didn’t think of it on my own. The teacher put a strip of masking tape a few feet away from the mailboxes to help her 2nd graders not crowd around the mailboxes at the end of the day. Her classroom rule is that only 2 students can be in front of the mailboxes at any one time (the rest have to form a line behind the line) and they can’t bring their backpacks to the mailboxes (they should be open on your desk before you go empty your mailbox). AWESOME idea!