Phosphorescent creatures trapped in glass globes to create light. The creatures never die but need to be let out once in a while.
    Conical sea shells people use as ear pieces to hear eachother.

   They live in cave and make light when confined in dark spaces.

   Elementals bring life to their own element. They are remnants of the offspring of Gaia.
   The Elemental Poles themselves are the source of Essence for each element. They are the most material places in Creation and are bastions against the Wyld. Each one pushes the Wyld back from it in a vast swathe that defines Creation's borders. The further Creation spreads from them the easier it is for the Fair Folk to regain this new territory but they always come up against these fortresses that bar their progress. The Lunars loved living in this hinterland, beyond the heartland of Creation. When the power of the Elemental Poles dims the Wyld grows closer. Fortunately they've never managed to overthrow one of the Elemental Poles. To the Fair Folk they are unassailable obstacles; essential for their conquest of Creation yet unapproachable as the sources of natural Essence that upholds it. Even in their physical form as dreams there's only so far they can go. They can still make their way through with difficulty at the places between the Poles where their Elemental energy is weakest. So the Solars erected four vast fortresses at these places to guard them. When the Solars had vanished and Creation was decimated by the Contagion the Fair Folk stormed them and began to enter the heartland of Creation itself. Only the intervention of the Scarlet Empress activating the Realm Defence Grid drove them back.
   The area outside the influence of the Elemental Poles was once opened up by the Solar Exalted as a new land. This was the site of many of the greatest wonders of the First Age.