I live in a very small apartment, and between two women with long hair and a very hairy dog, my hand-me-down dyson takes a lot of abuse. A few months ago, the telescoping wand part stopped working. I cleaned out my vacuum like usual (clogs happen), but no luck. Today, I essentially disassembled the entire thing with some help from YouTube, and lo and behold, there was a pen stuck in a u-shaped hard plastic tube I had never taken out before, and so much hair had been wrapped around it no air could get through for the telescoping wand.
I know this is a gross story, but instead of worrying about needing an eventual replacement my trusty old vacuum is back to humming along, so I'm a happy camper.
*Edited to add picture of approximately where the pen was.