The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
Water should really be number one.
Then your knife, then fire.
Although some may say fire would be number 2. I can get by without a knife, but no water...
A container for boiling water.
RB put it best cordage...and lots of it
I suspect it depends quite a bit on where you are. You can usually go a couple days without water and where I live water is common enough, but three seasons out of four heat loss is a real danger even over a single night. A warm fire (I can't get one started with primitive methods yet) or a good shelter to keep the wind out (easier with a knife than without) can go long way towards improving the odds.
And I always have a packet of de-hydrated water in my kit !!!![]()