I think we will try the PJ cottonballs on our next trip. I didn't forget to bring our signal mirrors (or other gear), I forgot to give my nephew some instruction on the use of a signal mirror.
We tried igniting toilet paper, magnesium, and a lighter starter soaked charcoal.
We don't forget compasses (ever), or charts, or any other survival gear. I counted the compasses up & there were a total of 5 compasses of 3 different types.
Piggin string are miscellaneous pieces of leather lacing, long shoestrings, 550 (or smaller) lengths of paracord, etc.
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QMC, USCG (Ret)
The best luck is what you make yourself!