I'm trying to figure out what coal basins you can light with a firebug as Tibia fandom states this:
Unlike normal Coal Basins, these ones are empty. You can use a Fire Bug on it make it a lit basin.
I'm thinking ones aside from quests, but you can also include the ones from quests if you'd like. I think my main goal is trying to find one that isn't from a quest since all the empty coal basins that I've been finding aren't able to be lit from a firebug.
https://tibia.fandom.com/wiki/Empty_Coal_Basin
I know only one coal basin that you can fire by using firebug. This coal basin is part of Kissing a pig Quest. If I find another coal basins which are not part of quest I will update my answer.
Source: https://tibia.fandom.com/wiki/Kissing_a_Pig_Quest/Spoiler
Source: https://tibiopedia.pl/quests/Kissing_a_pig_Quest
Edit 03/11/21:
Ferumbras Ascension Quest- using Fire Bug on basis Fire basins in Pumin Seal.
https://tibia.fandom.com/wiki/Ferumbras%27_Ascension_Quest#Pumin_-_Tarbaz.27s_Seal
Loqhakk - Applying to TibiaQA team as ModeratorJuly 26, 2024
Nareull - Applying to TibiaQA team as ModeratorJuly 14, 2024
Looking for new TibiaQA staff membersJuly 12, 2024