A really cool fanfic idea could be that the Minister of Magic is secretly under the influence of a powerful dark wizard. Harry Potter suspects something is wrong and starts his own investigation. Along the way, he discovers old secrets about the Ministry and has to fight against not only the dark influence but also the Ministry's bureaucracy that is trying to cover up the truth. This would involve a lot of mystery, action, and exploration of the complex power dynamics in the wizarding world.
One interesting storyline could be a blacksmith who discovers a magical metal only found in the Forbidden Forest. He uses it to create a powerful wand that has unique abilities. Another could be a blacksmith who is actually a descendant of an ancient wizarding family of blacksmiths and is on a quest to recreate the lost magical artifacts of his family.
One interesting plotline could be Harry using his unique experiences as a student at Hogwarts to reform the Ministry. For example, he might create more fair laws regarding magical creatures, having befriended so many during his school days. Another could be his struggle with the pure - blood supremacist factions within the Ministry, trying to change the old - fashioned views that have long been ingrained there.
Perhaps in a fanfiction, the Minister of Magic is under the influence of a powerful dark charm, and Harry Potter has to find a way to break it without causing chaos in the wizarding world. He might have to team up with unlikely allies from different houses at Hogwarts. This could involve a lot of character development and exploration of the relationships between different wizarding factions.
One interesting storyline could be Harry Potter discovers a hidden alchemist society within Hogwarts. He then learns ancient alchemical secrets that help him in his fight against Voldemort. For example, he might find a way to transmute substances to create powerful magical defenses.
In some harry potter sword and magic fanfiction, there are storylines that involve time - traveling with a magical sword. Imagine Harry or another character going back in time with the help of a sword that has time - traveling properties. They could use this to change certain events in the wizarding world's history, like preventing the death of a loved one or stopping Voldemort from ever rising to power in the first place. There could also be a story where the sword has a mind of its own and chooses its own wielder, who might not be the expected hero, leading to a whole new set of adventures and challenges.
A possible storyline is that the wizarding world is trying to integrate more with the Muggle world after 19 years. There could be a plot where Harry and his friends are at the forefront of this movement. They might face opposition from some traditional wizarding families who are afraid of losing their pure - blood status or magical traditions. This could lead to all sorts of adventures and challenges for the characters as they try to bridge the gap between the two worlds.
One interesting storyline could be about Harry and Ginny raising their kids and dealing with the challenges of passing on the wizarding traditions while also protecting them from the dark forces that still lurk. Another might be about Ron and Hermione as parents, trying to balance their Ministry jobs with family life and teaching their children about the importance of friendship and loyalty, just as they learned in their own adventures at Hogwarts.
One interesting storyline could be about creating a new magical creature in the Harry Potter RPG fanfic world. The character might discover a hidden spell that combines the essence of different animals, leading to a whole new species. This could then cause a stir in the wizarding community, with some seeing it as a great discovery and others fearing the unknown implications.
One interesting storyline could be about the teammates going on a secret mission outside of Hogwarts. They might face new magical creatures and have to use their combined skills to survive.
A possible storyline is that the Thunderbird wand is passed down through generations in a family, but it has been lost. A young heir of the family embarks on a journey to retrieve it. In the process, they learn about their family's dark past and how the wand was once used for both good and bad. With the help of new friends, they overcome obstacles to reclaim the wand and restore their family's honor.