Mental Floss has an article about the history Swiss Army Knife. I have one that I bought as a souvenir when I visited Interlaken, Switzerland, in 2000, and I almost lost it recently when it slipped out of my pocket in the car after I'd been using it to cut open boxes. Luckily, my eagle-eyed child spotted it for me.
During our Interlaken visit, we met a Swiss Army chef there, and he was kind enough to show us around town and made us a delightful meal. I neglected to ask him if he had a Swiss Army Knife.