I remember growing up as a kid, my father had a dozen or so CD albums in our motor home to listen to when camping. One had a machine that appeared to be designed for cracking walnuts on the front cover, rear cover had tracks as well as the front cover but in blueprint style. I believe the album was heavy metal music, though it might have also been rock. It would be great if somebody could help me find the name of this album!! It's been on the tip of my tongue for some time, and I've been unable to find it with my own internet detective work.
EDIT: I found the album's title. It's called "Bust a Nut," by Tesla.