Enter the cabin
Stand next to the item you want to move
Use the pickaxe or axe on the item if it is furniture or a placeable object
Pick up the item if it becomes a carryable object
Walk to the new spot
Place the item by clicking or using the action button
If the item is a chest, open it first and take everything out before moving it
If the item will not move, try using the furniture placement controls instead
If you want to remove a wall or floor item, use the correct tool on it
If the cabin is fully upgraded, use the interior space to rearrange items more easily