So currently there is a bunch of makeshift fireplaces from rocks everywhere since this is how you make fire and fire is useful.

However this kinda sucks if your traveling.

There needs to be a better traveling option than needing to farm 10 rock.

Some ideas:

swedish torch ~ basically you drill out the center of a small log and light it, burns for a fair amount of time and theres no ugly fireplace left over, could be placed anywhere to give a fire without giving a fireplace.

hand torch ~ fire in the hand on a stick, very basic. Could have foragers as a basic one that burns out quickly, while having something like pioneers with oil could last alot longer.

Oil based laterns or lights ~ Make use of the oil resource (is it still in the game?) and use it to keep city lanterns, or even mobile lanterns lit. You could also have animal fat turned into oil for this. For city lanterns you could put the upkeep on the tribe totem instead of having to fill each lantern in the whole city you would just have to put in your totem. Where as personal lantern could be a item with quality, quality effects how fast it burns through the oil or fat, with a refillable amount like the waterflask.

I'm sure theres more ideas but those are just 3 off the top of my head.