You may want to rephrase this one for a more generic and well understood term. It took a while to figure out what you meant with "squeeze light", and I'm a borderline flashaholic!
I suggest the terms
"keychain LED light" or
"keychain size LED light".
I feel that the 10 essentials are really only complete when you supplement them (for me, it's the second set of 10 on my list).
For me, limiting myself to an arbitrary "X number of essentials" is limiting and really not helpful at all. But to nail the point home when educating people, those "essential" lists are very good, I think.
Another way to drive the point home is to break down into these 4 questions:
- 1) Can you get enough to drink, even if forced to stay out for a night or two?
- 2) Can you protect yourself from the environment, i.e. being too hot, too hot, wet or eaten by bugs, even if forced to stay outside for a night or two?
- 3) Can you find your way home?
- 4) Failing that, will someone be able to find YOU?
1) Obviously covers the water procurement/treatment debate.
2) Covers shelter, clothing and bug gear.
3) Covers navigation and light.
4) Covers leaving a game plane with a responsible party and some means of signaling (whistle, light, bright colored gear and clothing).
Water purification can be ranked higher depending on the environment.
Yeah, pretty much everyone is on me for that one.
HJ
In Scandinavia, I drink water pretty much everywhere away from too much urbanization, industry and agriculture, and consider myself lucky that I might do so. I put the into the "locale dependent" part of priorities.