heroes of athas and the dark sun
While society and culture in Eberron may be dark and harsh, it is magically advanced.
Bound elementals are common, and together with arcane magic, are used for various purposes including high speed trains on the lightning rail, powering flying Airships and more traditional elemental galleons, and keeping some cities and structures afloat.
Dopplegangers, known as changelings in eberron, are accepted as part of society.
Warforged and other creations of House Cannith walk the streets, living constructs of varying degrees of intelligence and power.
artificers, runepriests, and alchemists ply their trade in large cities, creating contraptions and imbuing weapons and armor.