This mailbox was one of those finds that I knew I would use it when I got it but I didn't quite know how at the time. Well, it soon became apparent that I needed this for my "inbox". When the students need to turn work into me I tell them to put it in the mailbox. The mailbox is enclosed so papers can't fall out and get lost, and it is very easy to find!
You can find these mailboxes at hardware stores and sometimes in thrift stores and garage sales.