Speaking of Navy SEAL, I just learned that part of their required gear is a pencil and paper.
No batteries or signal required. Silent communication, the paper burns and I suppose a pencil could pith.
I have moleskines in every bag (including purses and dog walking pouch) and vehicle.
I am curious what are all the uses the SEALs anticipate.
From the unofficial and totally imaginary Official Seal Book:
Paper:
1. Papercut neck. Victim may eventually bleed out. If not, it really stings!
2. Parachute. Rip out all pages, glue together.
3. Toilet paper. Be careful of papercuts!
4. Picture of Bin Laden (thanks for above demonstration)
5. Deck of cards. Pull out pages on long helo ride to target, make into deck.
6. Firestarter. For those times when the helo won't lift off.
7. Paper airplanes. For when both helo's won't work.
Pen:
1. Pithing victim.
2. Poking eyes out.
3. Writing instrument. Preferably after cleaning if used for activity 1 or 2
4. Double as pen-gun.
5. If fountain pen, may be squirt into target's eyes to temporarily blind.
6. If quill pen, may temporaily incapacitate by tickling target.
7. Fire starting. Can be used with "bow" method
8. Drum stick. Useful for signaling to others.
Be careful not to tell others about official SEAL usage of said instruments!!