This achievement requires first building a boat with three decks. You can then build the required accessory on top of a fire on each of the decks
You need sticks to craft a drying rack and metal and clay before you can craft a cooking pot or a clay kiln.
Clay can be dug up from obvious mud piles on beaches and requires a bone shovel. You'll need to kill a Gorehorn for a Gorehorn Crest to craft the shovel.
Metal deposits will appear on some islands starting in chapter 4. You can smash these deposits with a hammer (also crafted from a Gorehorn Crest) to obtain metal.
Once you've crafted the three accessories, interacting with each will bring up their specific crafting menu. You'll have to use grass to start the fire at each one, then use each one to craft something.
The drying rack can craft leather (from animal skin) or cooked meat (from various raw meats).
A clay kiln can craft clay or metal-specific items like clay pots, metal arrows, a metal tipped spear, etc.
The cooking pot can craft potions and requires a clay pot as well as various other ingredients, mostly flowers- sealilies, fluttercups, and bloodbristles.
Once you have an active (or completed) item crafting at all three accessories simultaneously (be sure a fire is burning at each), the achievement will unlock.