The Boy Scouts use this list. Makes a lot of sense. You’ll see different variations of this and I don’t know what you’d do with a map and compass on a Half Dome hike. Stay on the trail and you’ll be fine.
First Aid kit
Flashlight or headlamp
Fire! (matches, etc)
Map and compass
Water (and treatment)
Unrelated thought worth quoting: “In our culture we have such respect for musical instruments, they are like part of God.” – R.I.P. Ravi Shankar
MrHalfDome™ – Rick Deutsch – www.HikeHalfDome.com