<img src="https://techcrunch.com/wp-content/uploads/2007/01/Paper Shredder works well enough on CDs and DVDs to your wife can't find out what you've been doing in your office, but not well enough to hide your trail from the Feds. Powered by a hand crank, the shredder can make strips out of credit cards, papers, and even the sturdiest of media. Comes with a basket, and retails for $19.99. In this day and age, you're probably going to want to shred those backups of your Tax data instead of just throwing them out in the trash.
Product Page [Mikeskimball via Shiny Shiny]