Various piles of old drives (mostly non-working of so small to be of no practical use).
Ya never know. Few years back I did a clean out of someone else's junk. But I missed the tip trip and took a few days to get around to it again.
Someone came in with an old machine, legacy but prized data (they got the backups speech), and a drive with a burnt out circuit. Fortunately for them, amongst the crap I'd not been able to bin there was the same model + firmware revision of their drive. Even more fortunately, this was before the days of the BIOS chip that needs to be transferred, so I was able to swap boards and recover their data.
There are places that buy old HDD's for this purpose.