I never leave camp without my pack, don't have a need for a "day pack" for the way I hunt, my day pack is just my pack with fewer items.
Spotter and tripod
Kifaru paratarp and stakes
Trekking Poles, also used for the tarp.
Chugach Rain Jacket and pants
Supper Down Jacket and vest
Gloves
FLeece hat and Kuiu Merino beanie (thin one)
A buff, keeps me warm and protects from sunburn.
TI Goat Raven Bivy (I have 2, sleeping bag at camp stays in one.
Zpack sleeping bag (will some time leave this depends on weather)
3 section cut off a Z-Lite pad (use this as a glassing seat and as a torso pad for siwash)
Headlight
GPS
Sat phone
Jetboil SOL TI stove a a small fuel can.
Sawyer Water Filter, with water bladder (for when I have to carry water high)
Kill Kit (Havlon with spare blades, Cutco Folder, Cut Resistant Gloves, wet wipe or 2, 2 Kifaru Meat bags, OR Dry bag 55Liter, compactor bag.)
Small possibles bag. (Pain Killers, Ace bandage, quick clot, Aqua Mira, blister Care, (second skin), needle with dental floss, candle, windproof lighter, Bens(for bugs), 2AAA batteries (in case my light batteries fail), UV Aqua seal,(for quick repairs), lens cleaner. I don't carry a huge aid bag, will call on sat phone for big stuff.
Plastic water bottle (I don't use a nalgene too heavy) I use the plastic 1 liter disposable type with the flip up lid. I bring 2 and leave one at camp, never had one fail, burn on the way out.
One or two Mountains House meals and a few high cal snacks
Coffee or tea and a few spots drinks to rehydrate and replace electrolytes.
That is what comes to mind off the top of my head.
Steve