In my pack I carry:
Spare batteries for flash light, GPS, and range finder,
Rubber gloves for gutting. Game bag Cotton to cover critter.
Toilet paper, butt wipes, and hand wipes and a wash cloth in a Zip Loc ( cottonelle makes small packs of butt wipes that are sold in Target for a buck. Also the same with the hand wipes. They come in handy for lots of things. Wipe sausage greese off knife, Wipe up blood ect.
sweater.
Spare ammo, small light Ka-bar floding skinner. A small hatchet.
H20, diet coke ( I'm addicted to caffene and I get a 2PM head ache if I don't get some) both in Bottles
Some snacks ( Cheese crackers, Jerkey ect) and lunch (usually something canned we cook on the hill) I also have a couple 1 gallon zip lock bags for trash.
Fire starter, some kindeling, matches (strike anywhere in a container) a couple birthday candles ( the kind that you can not blow out)(if you can not neither can the wind!)
A pair of space blankets, and a disposable poncho, small 1st aid kit with allieve and cold medicine and chap stick.
Decoy cord and 25' of 3/8" rope. It has come in handy in getting parts either up or out.
And a spare pair of gloves and socks in a Zip loc bag.
On my body I carry.
GPS, 10X42 Binos, range finder (being a city boy I can not tell past 100 yards) a flash light, disposable camera, and a clip on the head light( mine is tiny that clips on the bill of a baseball cap) Belt knife, and a zippo lighter.
Leather gloves work gloves, ammo, rifle (M70 in 338 WM) Some times a handgun (in Idaho it's a 22 to shoot grouse most of the time it stays in the saddlebags If I were to hike it would stay in camp)