I'm not a light packer, I take pretty much anything and everything I think I might need. I'm also not one to get down out of the tree for lunch, so I carry that with me too.

Some items may vary depending on the time of year.

Camo face paint (I hate face masks)
Gerber Multi-Tool
2 Lighters
Earth scented cover scent
Doe urine
Doe Estrous Lure
Primos Power Buck & Doe grunt tube
Compass
1 bottle of Gatorade
1 bottle of water
Bottle to pee in
TP
Small flashlight
Hunting license/tags
2 PB&J Sandwiches
1 Apple
Trail mix
Jerky
Rattling antlers
Binoculars
Gloves
Walkie talkie
Safety harness
Broadhead wrench
EZ Hanger bow hanger
Ribbon for marking trails
Extra foot pegs
Disposable camera
Small kit with assorted allen wrenches in it
Extra broadhead blades
Back up release

There might be more, I can't remember. Anything and everything I might need. You never know what may happen in the course of a day.

It's better to have and not need than to need and not have is my method of thinking when it comes to packing.