I'm stealing the eye patch idea! You'd think after 24 years behind a spotting scope as a game warden, someone among our ranks would have come up with that!
Pillow is no longer comfort item for me- it's a necessity

, typically a S2S Aeros, but sometimes a HMG pillow/stuff sack.
I found Crocks weigh a lot for what they are, if I bring camp shoes, I bring trail runners (that I put 100's of miles on)- great camp shoe, but can be used for wading if necessary and in a real pinch, I can hunt in them.
Book on iphone.
Instead of a 20,000 mAH Anker, I carry two 10,000 ones on long hunts, 20,000 weighs 13 oz, 10,000 weighs 6.4 oz- identical weight, this way just in case a charger were to awry. Most of my hunts are shorter than 10 days and the 10,000 is perfect for those.
a towel, not a tiny one- 18x42" and 1.7 oz- I can dry off after bathing, wipe the inside of a tent down, etc- it's S2S Airlite
small-ish, but not tiny (6x9') tarp to glass under and doubles as a bivy shelter
spotting scope

my guide will have one, but the hunters I visited with said bring one of your own
I'm also bringing at least some of my own food- I've got suppers that work, taste good and are calorie rich (Peak Refuel) vs Mountain House, I also like my own breakfast and lunch stuff- so will bring some of that as well