On each of my 3 Alaskan fly-in hunts(1 float) I brought most of the recommended items. At the end of each hunt I took note of which items I never used in an attempt to reduce weight next time, here's a short list:
Way too much food-I brought back almost all of my rice and ramen and hot chocolate(it just required extra time to boil water),
Clothes-extra underwear and pants and shirts that were never worn on a 14 day hunt,
Batteries-I just took way too many spares-I spent my time hunting or sleeping not reading in the dark.
Eating utensils- a bunch of knives, spoons, forks etc. I cleaned up after myself each meal, could have made due with 1 each and a spare
Bullets, rifle, salt, knives,-basically anything you might need if you harvest game-could have saved a bunch there but they will make the next trip too.
Other people may have needed some of these things or situations may have changed requiring my use of them as well, but, next time I may switch out some of my items for others.
What items have you taken that you later found YOU did not need?