I didn't know it until recently myself but I'm glad that I do now as I'd like to make a few of these for my kit.
You sound like you have an amazing source of scout information and background, you should be writing posts like this too. I'm always trying to find simple things that people can use not just now, or when SHTF but in general. This pencil sharpener could have saved me so much effort when making fires through the years!
I'm going to take you at your word and write about my experiences as an explorer in those times, now I'm an urban explorer because of the concrete where I live, Emma.
A big hug to those that make us look at the beauty we have in our hands.