From The Urbach Letter –
Cool Thing of the Month
The Bosser 100DX CD Destroyer
Would you ever want a thief looking at your Quicken files, reading your correspondence, searching through your data for certain "interesting" keywords? Of course not. Even if you crack your CD inside a bag (to contain the shards), a sophisticated snoop or law enforcement agency can still reconstruct most of the data, due to redundancy. That's why some "paranoid" people use a belt sander to remove the top (label side) data surface of the disk. That does work, but creates clouds of potentially harmful metallic dust.
So you need the Bosser 100DX, especially if you've got a big pile of data CD's to deal with. It's kind of fun to use too… just feed your disks into the top slot. Motorized knurled rollers simultaneously pull it through, and permanently distort the data layer, rendering the disk unreadable. $45 (cheap!) at Cyberguys.