I am old enough to remember those days. We used to have these things called "routing slips". They were just a list of names, usually of everyone in your department. You'd staple them to a memo. When it showed up in your mailbox (not email box, but "regular box") you would read it and cross your name off and go put it in the next uncrossed off name's mail box.

Our boss routed EVERYTHING. I think he invented spam. Because these routing slips were anonymous about who started the memo on it's route, we started picking up all kinds of garbage from our trash cans - orange peels, used Kleenix, etc. - and sticking routing slips on them and sending them on their way.

Believe it or not, the boss finally got the hint!