I worked at my college's tech help desk for a couple of years. At the time, they had printers that could be administered remotely (via a web browser) and had neglected to put a password on them.
For unclear reasons, the bottom paper tray of one of the help desk's printers was always left ajar. This caused the status message on its LCD to cycle between "Ready" and "Tray 3 open".
I logged in and changed the Ready message to "Tray 3 closed".
I still think it's hilarious.
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