I normally wear earplugs, so there's an adaquate supply already in the hygiene bag.

I'm an avid reader, so I'll raid my supply of paperbacks for stuff I can reread. I have, without exageration, several hundred of them.

I don't get along with most commercial sleep aides, but chewable Dramamine is powerful and short lasting.

Weapons is a bit of a gray area. There's no conventional firearms in the kit, but some of it may qualify as weapons. I always have a pocket knife on me (usually a SAK), and there some tools that would make for good weapons (crowbar, utility knives). I figure I'd have to leave the archery tackle behind.

I'm kinda cringing asking this, but musical instruments?