So as it is the camp fires burn out after a period and you have to re light them. After I saw a rather useless object in a store, some Ashes, I thought what if once the camp fires burn out they are destroyed and ashes get spawned in their place. If you feed the fire before it burns out it resets a timer or something and the fire isn't destroyed. To add to that you can only feed the fire if you have some collected wood (the sort you collect to build a camp fire currently).
Also since it rains a lot in Barovia during spring and summer, could once the rain starts in an area can all camp fires be extinguished? I don't have anything against camp fires but I also had the idea that when you ignite a camp fire can it also check to see if its raining and prevent the fire from being ignited?