Faolyn
(she/her)
Like the Eberron route, and go with captive elementals. Or the Discworld way, with pet tiny dragons. Or the Dwarf Fortress route and magma forges.Without coal, though, metallurgy at scale stalls out, unless you burn huge amounts of wood, or another energy source is available.
Actually, the latter could make for an interesting world where only dwarfs (or their equivalent) are capable of really good metallurgy.