True story, but anecdotal…
In the days before cell phones had cameras, I worked for a computer sales and service company. They preferred dealing with big clients if they could, but had a bunch of small companies that they had sold gear to, so we - the technical guys - got to support the old PCs and servers in these offices. Many were lawyers, and from my experience at least, a lawyer will not buy anything for their office until they absolutely have to.
We got a call on a Monday morning that “The printers won’t print anything,” from one such office. Normally it would have been my beat, but I was busy with another client. One of the other guys went down to the client’s office to see if they could figure out the problem, with the advisory to call me if it wasn’t something simple. About an hour later, I got a call from the other tech, who was apparently sitting in his car in the parking lot. He was there because he had figured out the problem quite quickly, but simply couldn’t stay in the office due to the circumstance.
According to him, the server had shut itself down over the weekend (it had been warm, and of course, no lawyer will pay to air-condition an office that’s empty over the weekend). When he examined it he found that the printers all depended on the server, which was housed inside a credenza that supported three dot-matrix and one laser printer on their top surface. All the boxes of tractor-feed paper for the dot-matrix units were stored within the credenza to keep everything tidy. He decided that he’d take a look inside the server (I think it was a Compaq ProSignia) after powering it on produced a brief, very muffled-sounding hum and no output to a screen.
He took the server tower outside with him “To clean it up a bit” and to call me. Without a camera there was no way to actually prove this, but his claim was that the entirety of the inside of the computer case was filled with “A custom-fitted, wall-to-wall dust bunny that looked like it was big enough to break itself free and escape over the fence!” The multi-year accumulation of paper dust had been carefully kept away from the printers by filtering through, or more accurately in to, the server. It overheated, finally, and shut down when the room got a little warm over the weekend.
The tech had gone outside not so much to clean the server out and call me, but so he wouldn’t embarass himself or the client by almost falling down laughing at the sight of the completely full space inside the box. A few blasts of canned air and a couple of healthy shakes, and the server powered right back up - ran for at least three more years after that, too.