The Gear Junkie researched a terrific post – Origins of the Swiss Army Knife.
It’s essential hiking gear, for me.
At the Calgary airport you can buy confiscated knives (and many other items) every Tuesday morning starting at $2 each. It’s a charity fund-raiser.
Check your local airport to see if they do the same thing.
besthike.com 
Let me know if you find mine. I had to abandon my old Victorinox Sportsman when we did not have time to check in the luggage.