I'm a pretty tactical guy, even though I don't carry, or indeed even own a single gun. I'm always packing though, and you know, my little piece of gear has saved me more than once, and I really would feel almost naked without it.
I'm referring of course, to ChapStick.
Most of the time I just carry my primary, but on occaision, if I think the situation might demand it, I'll carry a backup in another pocket (usually weak-side, with the primary on the strong side upper pocket. I might even have one in my glove box, just for emergencies, or if I unexpectedly run out when I'm only carrying my primary.
I think my all-time record for carrying at the same time was no fewer then four on my person- I don't do that much anymore though- the logistics are too complicated, and I feel silly figuring out which would be the backup, the tertiary, etc. Most of the time one is enough. (Maybe one plus a backup in the car.)
Some people have preferences on what type they like to carry, but I feel that for good all-around defensive purposes, I like to carry the SPF-15. Some people like to go lighter, but I feel that this is a good traded-off. I also go for the dark blued model, much less flashier than some others out there.
I kid you not when I say that ChapStick has always been there for me, and saved me many times. It's been able to protect my entire family more than once, and you can't say fairer than that.
I'm a firm believer in educating kids, and I don't think you should keep these things taboo. I've shown my 4 year old how to properly treat and use ChapStick, and he's pretty good now, and I believe that he has the proper level of maturity and respect to safely handle it. It's to the point where I can almost trust him with his own one to carry. Someday I will, and that will be a proud moment for me as a father.
-James