Answer
Items include survival supplies, healing, drinks, food, materials, ammo, armor, tools, and weapons.
Piggy: Intercity items include consumables, healing items, materials, ammo, armor, quest items, tools, and weapons.
For survival, prioritize water, food, healing, then route tools. For progression, add materials and base-building items after you can safely return to base.
Use the Items hub for food, drink, healing, materials, and utility items; use Weapons for melee, guns, ammo, and armor.