Exploration or Completing Missions
Always carry with you a mini base that consists of 2 Stone/Concrete Bases, 8 walls, and 2 Stone Roofs.
Always carry with you a fire place.
Always carry with a bedroll.
If you get caught in a storm along your travels, you can always set up base, cook food, or go to sleep for the rest boost.
Mortar and Pestle
You can also carry a mortar and pestle just in case you come across a mammoth or 2 and elephants if travelling near these biomes. You can process the tusks to crashed bones and then make epoxy. You can only carry 1 tusk, and if you have a mount, it can carry a 2nd. There have been instances where I found more than 2 by killing a couple of mammoths, then killing an elephant.