A cul-de-sac in arcanotechnology, the Singularity Plant is a power station that is more dangerous than it is valuable.
With but a name, these places fill common folk with apprehension and dread
Even the most despicable and evil Tyrant will be convinced they pale in comparison to this monstrosity.
“Swiftly, repent! The Saintmaker is coming!”
An otherwise simple spear, the dread blade of Hatred brings rot and decay to all it strikes, be it armour, body, or soul.
A glowing green stone flowing with the elemental power of evil
A standard book of evil.
A handsome bed set, obviously expensive and likely both old, and imported.
Perhaps those that practice elemental magic begin to take on characteristics associated with their chosen element. For instance, an earth elementalist might be prone to agoraphobia, while air and possibly fire elementalists might have problems with claustrophobia. Water elementalists might always seek the path of least resistance. A fire elementalist might have a cat's opinion of water. This could also apply to physical differences. Fire elementalists might have a freakishly high metabolism and a permanently high body temperature. Water elementalists would probably never get dehydrated, but might slow down a lot when it's cold. Etc, etc.