We have no problem with shredding pulp documents, but it's always felt wrong to break CDs and DVDs. For one thing, we've never been sure how to do it exactly. Do you use tools? If so, what kind? Breaking discs with your bare hands seems like an unnecessary risk of personal injury.
So it makes perfect sense that something like Elcom's "media crusher" would come along. Fareastgizmos reports that the crusher, which is powered by a USB connection, "takes only 5 seconds to permanently destroy" CDs and DVDs.
The device doesn't literally crush the discs, but it obliterates their surfaces to render them unreadable. And in the process, it leaves a nice design so you can use them for coasters.