knife, water, snack, dishwashing gloves(easy cleanup for field dressing), clothes/boots, bow/arrows/release, gun/ammo... good binos maybe... compass if hunting wilderness...

I come from a long line of hunters who smoked on the stand... cigars, cigarettes... scent-lok/scent sprays, etc... *shrugs* I've never had a problem filling the freezer without 'em...

fancy doo-dads and widgets are no substitute for good woodsmanship...