Well, perhaps a fanfiction could center around an ice - making magic competition at Hogwarts. Wizards and witches from different houses compete to create the most magnificent ice structures. The main character, let's say a Gryffindor, struggles at first because they don't have a natural affinity for ice - making magic. But through determination and some help from a mysterious Slytherin who has a secret love for ice art, they manage to create an ice - castle that not only wows the judges but also reveals a hidden passage that leads to a long - lost magical artifact related to the founders of Hogwarts.
One idea could be a story where a new student arrives at Hogwarts with the ability to create ice sculptures that come to life. The ice creatures could either help or hinder the main characters in their adventures. For example, they could assist in a battle against the dark forces by freezing the enemies' wands. Another idea is that the ice - making magic is a lost art that Harry discovers in an old, forgotten book in the restricted section of the library. He then has to learn and master it secretly to use it against Voldemort in a final showdown.
They could use ice - making magic to create ice bridges to cross otherwise uncrossable gaps, like the chasms in the mountains around Hogwarts. For example, when the characters are on a quest to find a rare magical herb on a cliff - side, the ice - making wizard among them could freeze the waterfall next to it to form a staircase of ice leading up to the herb.
Often, the characters' skating skills can be related to their magical abilities. Maybe a skater can use their magic to perform more difficult jumps or spins on the ice. In some fanfictions, the ice skating competitions are held in magical settings, which is really cool. There could be magical creatures as spectators or the judges could be famous wizards. It adds a whole new layer of excitement to the traditional concept of ice skating.
Well, in some 'fire and ice harry potter fanfiction', there could be the idea of a magical duel where one wizard uses fire - based spells and the other ice - based spells. It creates a really cool visual and a new kind of magical combat style not often seen in the original books.
An idea could be that there is an ice cream that can show memories when you eat it. In the fanfic, Harry Potter could eat this ice cream and relive some of his forgotten or suppressed memories about his parents. This would add an emotional depth to the story and also be a unique use of the ice - cream concept within the 'Harry Potter' world.
One unique concept could be magic tattoos. In some fanfics, wizards have tattoos that store magic or can be activated to perform spells. For example, a tattoo of a phoenix might allow a wizard to burst into flames briefly for protection. Another is magic based on constellations. Wizards might draw power from the alignment of the stars, and spells could be more powerful during certain celestial events.
Some fanfictions feature unique magic related to memory manipulation. Instead of just using the Obliviate spell, there could be a more complex form of magic where one can not only erase but also rewrite memories in great detail. There might also be a type of magic that is based on the constellations, where wizards can draw power from the alignment of the stars. Additionally, a unique magic could be the ability to transform into mythical creatures, not just the Animagus transformation we know from the books, but into something more fantastical like a phoenix or a dragon.
In some Harry Potter fanfiction, it is possible for Harry to create sentient magic. Fanfic writers often explore unique magical concepts and abilities, and this could be one of them.
Another fanfiction concept could be that Naruto discovers an ancient scroll that teaches him ice make magic. At first, he struggles to control it as it's so different from his normal chakra - based jutsu. But with the help of his friends, especially Sakura who studies the medical and chakra aspects, he manages to master it. He then combines his ice make magic with his Rasengan, creating a new and extremely powerful jutsu that surprises his enemies.
Some fanfictions explore the idea of wands having emotions. For example, in 'The Sentient Wand', the wand can feel joy, sadness, and even love towards its owner. This changes the dynamic of how the wizard - wand relationship is perceived.
One more unique aspect is the potential for new magical creatures or entities. Since green magic is associated with nature, fanfiction writers can introduce new nature - inspired magical beings. These could be spirits of the forest, or sentient plants that can interact with wizards. It also allows for new plotlines centered around protecting these new entities or using their power for good. This adds a whole new layer of creativity and mystery to the Harry Potter fanfiction world.