Crafting always requires materials. Raw, unrefined resources are gathered from around Aeternum, and usually require using Gathering Tools. There are several Trade Skills related to gathering. These inc...
Gathering Page - NWGuide Database of Lore
Gathering Page Collecting Raw Resources - on New World Guide Database of Lore
Crafting always requires materials. Raw, unrefined resources are gathered from around Aeternum, and usually require using Gathering Tools. There are several Trade Skills related to gathering. These increase the number you collect and grant a chance to gather resources of a higher Rarity. These skills are also required to refine that type of resource into higher Tier materials.
Some items don't require tools to gather. Flint can be found on the ground all over Aeternum, but especially along the beaches. Small amounts of Wood can be gathered from bushes without the need for tools. Turkeys can be harvested for meat and feathers without a knife. If a tool you do not have is required, you will see that requirement in place of the option to gather when you approach.
A simple Tier 1 version of each Gathering Tool can be crafted at your Camp. They only require Flint and Wood, which can be gathered without tools, and have no skill requirement to craft.