Most of us ended up as ultra-lighters because of this very question.
1. Full Mirro cookset for 2 (while solo)
2. Coleman Peak 1 stove, along with that cookset.
3. big Air Force survival knife w/sharpening stone
4. Pistol/ammo Not to get controversial, but I gave up on that long ago when I realized my fears weren't rational. In some places, yes, most places, like carrying a brick, and it's never seen the light of day.
5. Texsport dome tent with fiberglass hoops. All the rage when new but 8 lbs.!