I did one day put a 5 1/4 floppy in the small gap between 2 drive bays. Plonk! Oh well, time to get the screwdriver. I heard it happened a lot at the time.
[Edit] there used to be a website, similar to bash.org, that people would submit stories like this all the time of stupid shit they were running into as a tech. Dont recall what it was. There was also and admin site, they may have been the same.