One interesting plotline could be Harry leading a secret resistance against Umbridge within Hogwarts. He might use his skills in the DA (Dumbledore's Army) to outwit her at every turn. For example, they could use magic in clever ways to undermine her rules without getting caught.
A common plotline is the students finding creative ways to undermine Umbridge's authority. For example, in many fanfictions, they use magic in sneaky ways to disrupt her classes or her attempts to take over the school. They might use spells to make her quills malfunction or to create distractions during her inspections.
In Harry Potter fanfiction, rebellion against Umbridge is a popular theme. Many writers explore how the students, like Harry and his friends, might resist her tyrannical rule. They often show creative ways the characters use magic or their wits to undermine Umbridge's authority. For example, they might form secret study groups that are actually resistance cells.
Perhaps there's a plot where Harry has a vision of a future where the Order causes great harm. This vision is planted by an enemy of the Order. As a result, Harry decides to take pre - emptive action against the Order. He gathers his own group of allies who believe in his cause and they engage in a series of battles against the Order, with many twists and turns as the truth slowly unfolds.
One interesting fanfiction could be about Umbridge getting a taste of her own medicine. Maybe the students use magic in a clever way to make her face the consequences of her cruel actions without getting caught themselves. Another could be a story where Umbridge has a change of heart due to some magical event that shows her the error of her ways, but still has to face the wrath of the students she's wronged. And there might be a fanfic where Umbridge is transported to a different magical world and has to learn to adapt and deal with new rules and cultures.
Another plot could be that Umbridge is forced to work with Harry and his friends against a greater evil. This would be a huge shift as she hates them so much in the original. But in the fanfiction, they might have to put aside their differences when a new dark wizard emerges, more powerful than Voldemort, and they realize they need all the help they can get.
Obviously, Harry Potter is one of the main characters. He is the central figure in the fight against Umbridge, using his courage and leadership skills. Hermione Granger would also be a main character. Her intelligence and knowledge of magic are crucial in coming up with plans to oppose Umbridge.
A common plot is the expansion of Dumbledore's Army. Writers often explore new members joining, different training methods, and more elaborate secret operations against Umbridge. Another plot is the personal vendettas students have against Umbridge. For example, Harry might be more directly confrontational in fanfiction compared to the books.
There could be a fanfiction where Hermione comes up with a brilliant prank. She uses a spell to make Umbridge's parchment write out all the unjust rules she has made instead of whatever Umbridge is trying to write. Every time Umbridge tries to write a memo or a note, the parchment just keeps repeating things like 'No groups larger than three' and 'No fun allowed' over and over again, driving her mad.
I'm not sure there are many 'lemony' fanfictions that are appropriate to recommend, as they often involve inappropriate or adult - themed content. However, there are some great non - inappropriate fanfictions about Umbridge that focus on her tyranny at Hogwarts. For example, some fanfictions explore how the students band together to resist her rules in creative and magical ways.
One aspect could be the exploration of her motives. If a fanfiction can show that there were more complex reasons behind her actions than just pure evil, it can be interesting. For instance, if it reveals that she was pressured by higher - ups in the Ministry to be so strict at Hogwarts.