While any specific use isn't very interesting, an honorable mention should go to the army's P-38 can opener. It was the minimum amount of sheet metal wrapped ar

While any specific use isn't very interesting, an honorable mention should go to the army's P-38 can opener. It was the minimum amount of sheet metal wrapped around just barely enough of a cutting surface to open a can of C rations. As they were cheap and easily available due to being standard in a pack of rations, they ended up being used for... everything. The link below mentions a few of the simple can opener ended up being used, if you want a few examples and has a picture of the tool. http://olive-drab.com/od_rations_p38.php http://olive-drab.com/od_rations_p38.php