If you ever see the small red camping stoves in the camps with tents, you can actually pick them up.
Guide to Pick Up Camping Stoves
Getting The Camping Stove
Not sure if it’s a bug or not, but if you hit them with a strong melee attack (hold down the attack button) if will give you the option to then pick it up.
You can only hold 1 in your inventory.
Hope this helps. Way better than making all of those campfires!