Hi Gil, many years ago on the trip from Durban back to Joburg, I decided to go to Rorkes Drift. You really had to want to get there as (if memory serves me right) it was approximately 50 miles on dirt roads and I was in a VW Golf!
The trip was worth it to me and I looked around the museum and grounds, white stones were laid out where the maize sacks and redoubt had been.
Wandering further afield I found an unfired.455/577 cartridge and an empty case amongst the rocks. I still have both.
I don’t know if they date back to the battle but they sit in my collection as a reminder of a worthwhile trip to a place of legend from my childhood reading of the events.