Big Agnes Cyclone Chair - just started carrying this. Totally cush and worth the hassle of assembly. I've even started to carry it with an old Ridgerest pad for day hikes.

8 X 20 Binoculars

GPS

Canon Digital Elph camera

iPhone - Started carrying it because I didn't want to leave it in the car at the trail head. I have a Kindle account so it substitutes for a book. Use it very occasionally for music if the trail back is long and boring.