One popular plot is Hermione getting into trouble during a dangerous spell experiment and needing help from her friends, especially Harry and Ron, to reverse the effects. Another is Hermione facing discrimination in the wizarding world because of her Muggle - born status and needing help to fight against it.
One popular plot could be Hermione exploring different historical eras. Since she's immortal, she has the time to witness great historical events, like the building of the pyramids or the Renaissance. Another might be her using her immortality to further her magical research. She could study magic in ways that normal wizards can't due to their limited lifespan.
A common trope is the 'mentor - like comfort'. Maybe Dumbledore or McGonagall takes Hermione under their wing when she's feeling down or lost. They offer her wisdom and a kind of parental - like comfort. It gives her a chance to grow and learn from their experiences while also getting the emotional support she needs. This trope often shows Hermione's vulnerability and her eagerness to learn and be comforted at the same time.
You can try looking on fanfiction websites like Fanfiction.net or Archive of Our Own (AO3). Just search for 'Hermione needs help' in their search bars, and you'll likely find a variety of fanfictions that match the theme.
Maybe Snape is involved in some sort of mystery or danger within Hogwarts that has to do with magic spells. Hermione, with her vast knowledge of spells and her in - depth study of the Hogwarts library, could be a great help to him in deciphering old spells or magical texts related to the situation.
One possible reason could be related to a difficult potion she's trying to brew. Snape is a potions master, and Hermione might be facing an ingredient or a process that she can't figure out on her own. For example, a rare potion that requires precise handling of dangerous ingredients.
She might be required to research in the restricted section of the library. Given her penchant for knowledge and Snape's often - dark and esoteric interests, the restricted section could hold the key to whatever he needs help with.
One common plot could be Hermione using her newfound physical strength (due to having abs) in a dangerous situation at Hogwarts, like fighting off dark wizards. Maybe she surprises everyone with her combat skills.
One popular plot could be Hermione and Harry getting married and raising their children in a world post - Voldemort. They might face challenges like dealing with the remaining Death Eater sympathizers while also trying to give their kids a normal magical education. Another plot could involve Hermione and Harry realizing they have feelings for each other much later in life, after having other relationships. Their family then has to adjust to this new union, with their friends like Ron having mixed reactions. A third plot could be a what - if scenario where Hermione and Harry were secretly in love during their Hogwarts days but hid it due to the war and their friendship with Ron. Their family story could then unfold as they finally come clean about their feelings and build a life together.
Some fanfictions might have a plot where Harry holds Hermione as part of a romantic moment. Maybe they've been dancing at the Yule Ball and Harry takes Hermione's hand and pulls her close, holding her. Or it could be in a post - war scenario where they finally realize their feelings for each other and Harry holds Hermione as a sign of their new - found love. This can explore their relationship in a different light compared to just their friendship in the original books.
One popular plot could be that they accidentally meet in the bathroom during a school event at Hogwarts. Maybe there's some sort of magical mishap that forces them to work together to fix it. For example, a spell gone wrong has flooded the bathroom and they have to combine their magical knowledge, Hermione's book - learning and Draco's pure - blood family spells, to stop the water. Another plot might involve them hiding in the bathroom from a common enemy, like a group of bullies or a dangerous creature that has entered the school. They start off bickering but gradually realize they have more in common than they thought.