C’mon, gimme a break here! I just got back from saving a world yesterday! Oh, well, at least it means I’m already mostly packed–let me make sure it’s all here, and maybe add some things that weren’t appropriate for anime in the Oklahoma sun…
My adventuring backpack, courtesy of North face (weight negligible)
First aid/survival kit–antibiotics, bandages, needle & silk in a sterile pack, firemaking tools, a couple of magnesium flares and powder (I assume there will be trolls, yes?), several small slow-burn candles, wilderness survival book (in case I forget some little trick), water purification tablets, aspirin (~5 pounds)
crossbow and bolts (~4 pounds)
jeans, short-sleeved work shirt, long-sleeved Ren shirt (tough material), Ren moccasin-boots (good traction, very comfy for long hikes in winter or summer), waterproofed wool cloak (yes, I have one), gloves, bandolier, several pairs of socks in individual plastic baggies (~5 pounds)
jerky, nuts, dried fruit for emergency rations (~5 pounds)
fighting knives (no arniseros would go on an adventure without these) and Leatherman (~1 pound)
lockpicks (weight negligible)
garotte–don’t ask (weight negligible)
stainless steel canteen and a bota, both full of clean water (~3 pounds–yes, the water’s heavy, but a known safe source is a Good Thing)
stainless steel flask of vodka–disinfectant, trade goods, firestarter…high-test alcohol is remarkably useful stuff, and I don’t like vodka, so I won’t be tempted to drink it (~1 pound)
all my silver jewelry–trade goods, and I might have to strangle a werewolf with the chain or something (weight negligible)
duct tape (~1 pound)
small roll of steel wire–good for tying up just about anything (~1 pound)
small sealed jar of acetic acid crystals (weight negligible)
25 feet of nylon rope–it’ll take my weight and not much more; more than 25 feet is impractical to carry regardless of weight (~4 pounds)
25 feet of light nylon cord–just for lashing things together (~1 pound)
pencils/pens, small notepad–for writing down complex directions or instructions, general notes, phonetic spellings of magic words (I’d hate to say “necktie” by mistake); Grace can tell you that I can record the entire history of the fantasy world in a notepad that’ll fit in a pocket (weight negligible)
flashfinger and lycopodium powders–good for impressing the yokels (weight negligible)
Assuming the individually negligible weights add up to about 2 pounds at this point, I’m at 32 pounds–here comes some optional stuff
bag of flour–either a food source or a simple way of spotting an invisible foe (~5 pounds)
spices, esp. salt and pepper–spices can be very valuable trade goods, and with salt on hand I can make my own holy water (~2 pounds)
candle lantern (hillbilly flashlight, sort of like a coffee can with a handle)–protects the candle from wind and rain, and the reflector lets you aim more light at what you want to look at (~1 pound)
large can of starter fluid–sprayed across an open flame, even a candle, it makes a serious jet of fire; it can also be used to wash away all manner of nasty gunk (~1 pound)
sunscreen (no use saving the world and then getting skin cancer), insect repellent (malaria’s a bummer, too), shades, leather vambraces (very handy for a knife-fighter), a handful of lightweight optical components–little mirror tiles, a prism, and a lens or two–for signalling, starting fires, and redirecting beam-type spells) (~1 pound total)
42 pounds looks like an auspicious place to stop, I think–it allows a little leeway on my approximated weights, isn’t too uncomfortable to carry, and is the answer to Life, the Universe, and Everything. What more could one ask? 
