I'm A Banana
Potassium-Rich
Yeah, Eberron can be shoved into the great wheel as easily as anything else. Some of it might be a little bit wonky in terms of 'home realms,' because things like the Silver Flame aren't exactly personified very much, and so don't really have areas that it would 'live' in, so to speak. But to match it up:
The Gods
The Silver Flame is hard, but could easily be, say, a particular region in Celestia of sentient, silvery luminescence.
Arawai might have a realm of rolling fields on Elysium, a secure field tended by halflings on Bytopia, or a great land of giant vegetables and great fertility in the Beastlands. Personally, I kinda like the idea of the latter.
Aureon Prolly has a nice little home in Arcadia, a quaint local library for the planar suburbia, if you will.
Balinor is a pretty hardcore Outlands kinda guy. If you use the Neutral Planes, though, Pangea is a great place for him.
Boldrei seems pretty hardcore Arcadia, esepecially with her marriage to Aureon. They've probably got a nice little place there.
Dol Arrah is straight up Celestia. Got a nice little sunrise palace there.
Dol Dorn seems pretty classic Ysgard. A hall of never-ending battle suits this Kord-rip-off just fine.
Kol Korran seems quite Outlands as well. I'm sure a lot of the bigger trading villages have more than a few temples to this guy, and his home is probably a well-traveled route.
Olladra seems classic Elysium, though Bytopia wouldn't be out of her league. A nice little hall for gamblers and rogues on a non-chaotic plane.
Onatar seems a nice match for Bytopia, having his forge in the highest mountains there.
The Devourer would make for an interesting aquatic layer of Hades, much like an evil counterpart to Elysium's aquatic layer.
The Fury seems like a self-contained cage in Carceri could be a good home...
The Keeper seems classic Hades, but could also find a place in Gehenna, giving that place a Realm of the Dead.
The Mockery feels like he would fit best in Gehenna, with the hideous ugliness and the trechary
The Shadow seems a great match for the Abyss, but I'd stick him in Pandamonium, perhaps, because less goes on there, or in the CE neutral plane whose name I forgit.
The Traveler would be right at home in Limbo, walking an ever-shifting realm.
The Blood of Vol is quite connected to the world, though Gehenna or Baator would suit the 'birthplace of necromancy' (where Vol got her power, though not where she spends her time) just fine.
The Cults of the Dragon Below are also connected to the world, but Pandemonium suits the caverns and madness feel just fine, and this could be where the power of the cults comes from.
The Path of Light is a good Mechanus deity who isn't an automoton, and is likely just that: sentient purplish light, or crystals.
The Undying Court are a perfect fit in Avalon (the NG neutral plane), but also comfortably sit in Elysium propper, a great necropolis of Good.
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The Planes of Existence
Eberron's "moons" strike me as potential places for planar portals. Fortunately, Eberron's planes are quite generic, and so match up to existing planes very well.
Daanvi is Arcadia
Dal Quor fits the Ethereal, the place in 2e most strongly associated with dreams. The 'formless void' = the 'roiling mist' of the Ether. You'd have to think of a good reason why it's 'distant,' but that's not really too hard. Otherwise, the Astral or the Shadow plane all work equally well.
Dolurrh is Hades. It's the only place the souls go after death, for some reason...but it's not nessecariy evil, probably because not everyone who goes there is evil. It could also be a place on the Negative Energy Plane that is less deadly.
Fernia is likely a realm on the Elemental Plane of Fire that has a particular concentration of evil, or may be a slightly evil volcanic region in the Outlands, near the lower part of the ring.
Irian is likely an area of the Positive Energy Plane that doesn't kill things all the time. It could also be a particularly benficent area of Elysium.
Kythri is Limbo.
Lamannia has many fits. It is probably best as a region of Arborea, with the raw nature angle, but it could also be the Beastlands, or even Elysium. In any case, it'd be less alignment-focused.
Mabar seems perfect as a less dangerous area of Negative Energy, but it could easily fit in Hades or Pandemonium, too.
Risia is just like the border between Water and Air: Ice. It's a bit evil, so it would work as a cold realm of Hades, an arcitic point in the Outlands, or even just a point along the cold volcano of Gehenna.
Shavarath sounds perfect as a place on the Outlands where archons clash with demons and devils.
Syrania Is elemental air, but with a strong tendancy of Good, and so it could be, say, the sky above Elysium as well.
Thelanis is probably a section of Arborea where the arcane magic of the elves is particularly strong.
Xoriat basically equals the oft-heard-about Far Realm ("Ordial Plane").
There ya go, a pretty picture perfect shoehorn. That'll teach those Primes to think that they're at the center of everything.
The Gods
The Silver Flame is hard, but could easily be, say, a particular region in Celestia of sentient, silvery luminescence.
Arawai might have a realm of rolling fields on Elysium, a secure field tended by halflings on Bytopia, or a great land of giant vegetables and great fertility in the Beastlands. Personally, I kinda like the idea of the latter.
Aureon Prolly has a nice little home in Arcadia, a quaint local library for the planar suburbia, if you will.
Balinor is a pretty hardcore Outlands kinda guy. If you use the Neutral Planes, though, Pangea is a great place for him.
Boldrei seems pretty hardcore Arcadia, esepecially with her marriage to Aureon. They've probably got a nice little place there.
Dol Arrah is straight up Celestia. Got a nice little sunrise palace there.
Dol Dorn seems pretty classic Ysgard. A hall of never-ending battle suits this Kord-rip-off just fine.
Kol Korran seems quite Outlands as well. I'm sure a lot of the bigger trading villages have more than a few temples to this guy, and his home is probably a well-traveled route.
Olladra seems classic Elysium, though Bytopia wouldn't be out of her league. A nice little hall for gamblers and rogues on a non-chaotic plane.
Onatar seems a nice match for Bytopia, having his forge in the highest mountains there.
The Devourer would make for an interesting aquatic layer of Hades, much like an evil counterpart to Elysium's aquatic layer.
The Fury seems like a self-contained cage in Carceri could be a good home...
The Keeper seems classic Hades, but could also find a place in Gehenna, giving that place a Realm of the Dead.
The Mockery feels like he would fit best in Gehenna, with the hideous ugliness and the trechary
The Shadow seems a great match for the Abyss, but I'd stick him in Pandamonium, perhaps, because less goes on there, or in the CE neutral plane whose name I forgit.
The Traveler would be right at home in Limbo, walking an ever-shifting realm.
The Blood of Vol is quite connected to the world, though Gehenna or Baator would suit the 'birthplace of necromancy' (where Vol got her power, though not where she spends her time) just fine.
The Cults of the Dragon Below are also connected to the world, but Pandemonium suits the caverns and madness feel just fine, and this could be where the power of the cults comes from.
The Path of Light is a good Mechanus deity who isn't an automoton, and is likely just that: sentient purplish light, or crystals.
The Undying Court are a perfect fit in Avalon (the NG neutral plane), but also comfortably sit in Elysium propper, a great necropolis of Good.
-----------
The Planes of Existence
Eberron's "moons" strike me as potential places for planar portals. Fortunately, Eberron's planes are quite generic, and so match up to existing planes very well.
Daanvi is Arcadia
Dal Quor fits the Ethereal, the place in 2e most strongly associated with dreams. The 'formless void' = the 'roiling mist' of the Ether. You'd have to think of a good reason why it's 'distant,' but that's not really too hard. Otherwise, the Astral or the Shadow plane all work equally well.
Dolurrh is Hades. It's the only place the souls go after death, for some reason...but it's not nessecariy evil, probably because not everyone who goes there is evil. It could also be a place on the Negative Energy Plane that is less deadly.
Fernia is likely a realm on the Elemental Plane of Fire that has a particular concentration of evil, or may be a slightly evil volcanic region in the Outlands, near the lower part of the ring.
Irian is likely an area of the Positive Energy Plane that doesn't kill things all the time.
It could also be a particularly benficent area of Elysium.Kythri is Limbo.
Lamannia has many fits. It is probably best as a region of Arborea, with the raw nature angle, but it could also be the Beastlands, or even Elysium. In any case, it'd be less alignment-focused.
Mabar seems perfect as a less dangerous area of Negative Energy, but it could easily fit in Hades or Pandemonium, too.
Risia is just like the border between Water and Air: Ice. It's a bit evil, so it would work as a cold realm of Hades, an arcitic point in the Outlands, or even just a point along the cold volcano of Gehenna.
Shavarath sounds perfect as a place on the Outlands where archons clash with demons and devils.
Syrania Is elemental air, but with a strong tendancy of Good, and so it could be, say, the sky above Elysium as well.
Thelanis is probably a section of Arborea where the arcane magic of the elves is particularly strong.
Xoriat basically equals the oft-heard-about Far Realm ("Ordial Plane").
There ya go, a pretty picture perfect shoehorn. That'll teach those Primes to think that they're at the center of everything.
