I'm a gear head so I carry lots of stuff, my last PH started calling me "Inspector Gagget" because whenever we needed something in the field I pulled it out of a pocket on my safari vest.
So my #1 item is a safari vest, not only does it carry all of your gear in the field, it carries you gear in the airport. All of those pockets can carry lots of small items thru the airport and because your wearing it, it never gets weighed, so long as the items can pass thru security your golden.
Item #2 - A good Multi Tool w/pliers. SAKs are great but they can't pull thorns out of your boots.
Item #3 - A personal first aid kit (Bandaids, moleskin, tape, pain killers, etc.)
Item #4 - Wet Wipes or TP (I prefer wet wipes they have more uses)
Item #5 - Handkerchief / Bandana
Item #6 - 10ft of paracord
Item #7 - Bic Lighter
Item #8 - Cell Phone (It will become your primary picture taking device)
Item #9 - Pocket Knife (If I'm wearing pants I'm carrying a pocket knife)
Optional
Item #10 - Power Bank w/cable (to recharge your cell phone)
Item #11 - Water (I like the nalgene flask, it fits nicely in a pocket)
Item #12 - Fixed Blade Knife (If you have a multi tool and a pocket knife you don't really need one)
Item #13 - Range Finder (Site your rifle in for 200 yards and leave the range finder in the truck)
I always carry items 1 thru 12 plus a few more things I have never used, like I said I'm a gear head.
I intentionally didn't mention extra ammo because its like saying take your rifle, it's just understood you have it with you.
Don't rely on your PH to carry very much, in SA a PH's packing list is very small
- Binos
- cigarettes
- Lighter
- radio (Maybe)
- Multi tool (Maybe)
- Pocket Knife (Maybe)
Good luck on your trip and happy packing.