I have a bunch of hard disks that have come to the end of their useful life, I was thinking about physically destroying them, but that seems like a lot of work.
https://github.com/martijnvanbrummelen/nwipe
Nwipe and shreados are very popular. What are your thoughts on the effectiveness of nwipe?
Open them up, salvage the magnets. Use sandpaper on the platters if you need to apply more privacy.