Dried driftwood is an elusive crafting ingredient needed for a Final Fantasy 7 Rebirth side quest in chapter 4, “Stuck in a Rut.” You’ll start “Stuck in the Rut” after talking to Gabe ...
Of course, be warned that the map shows every single area in the game, so Spoilers are to be expected. Final Fantasy VII Rebirth is now available exclusively on PlayStation 5.