Tags (always the first thing I ensure I have)
Pens
2 small backup knives (swiss army style)
Small knife sharpener
leatherman tool
extra rope
Hothands warmers
Grunt tube
Bleat can
cover scent
compass (never really need it where I go)
latex gloves (for field dressing)
small flashlight
rangefinder
extra batteries for both the light and my rangefinder
small medical kit
Small squeezable bottle filled with flour to check the wind.
extra ammo during gun season.
extra release during bow (have needed!!)

That's all I can recall now.

I carry everything else outside the pack. ie: my bino's are worn via strap, main knife is in a sheath, etc