P-38 Military can opener on my key chain.
It can be used as a screw driver.
Once a long time back, I broke down on the Freeway at night in a bad part of town.
Electric fuel pump burned out. So this guy pulls up in a van and has a similar spare.
I used the P-38 to connect the existing fuel lines and get the one he gave me and got the hell out of there!
What are the odds of that happening again Mr. Spock?