I walked by our local computer repair shop on the way to lunch yesterday and ran across a couple of kids taking customer privacy seriously. Instead of perusing personal data, like some repair shop employees do, these guys shatter hard drives that are left behind when customers upgrade their hard drives.
I told these guys about the fancy drive shredding machines I’ve seen at trade shows, but they seemed content in bashing up the drives. Shattering platters is the most time effective way to destroy GB or TB of data.
If you have old drives or media laying around that has sensitive data you might want to use the same method before it falls into the wrong hands.