One plot idea could be that Lavender and Harry are paired for a difficult project at Hogwarts. At first, they clash because of Lavender's over - exuberant personality and Harry's more reserved nature. But as they work together, they start to understand each other better. Harry discovers that Lavender is more than just a giggly girl, and Lavender realizes Harry has a lot of pressure on him. They end up becoming good friends and help each other through different challenges at school, like dealing with exams and the ever - present threat of dark magic.
Another plot could involve Lavender getting into trouble with some dark magic - influenced creatures in the Forbidden Forest. Harry, being the hero he is, goes to rescue her. During the rescue, Lavender sees a different side of Harry, his bravery and selflessness. This experience changes her perspective on him. Afterward, she starts to support Harry in his fight against Voldemort in a more meaningful way, using her own skills (maybe her knowledge of potions or divination) to help him out. And in turn, Harry starts to respect Lavender more and they develop a deeper bond.
In a fanfiction, Lemon could be a code name for a secret mission in the wizarding world. Lavender Brown might be involved in this mission along with Harry Potter. They could be trying to uncover a mystery related to the Dark Arts, and Lavender's unique skills and Harry's courage would play important roles in the story.
One possible fanfiction could be where Lavender Brown's jealousy over Hermione is like a sour lemon, adding a twist to her relationship with Harry Potter. Maybe she tries to use some sort of lemon - scented charm to win Harry back from Hermione in a very comical way.
One common theme is romance. Since Lavender was interested in Ron in the original series, fanfiction often explores what could have happened if she had instead fallen for Harry. Another theme is friendship. It might show how they could have become friends and supported each other through the challenges at Hogwarts.
There's also 'A Different Path for Lavender'. This fanfic might explore what would happen if Lavender had a more significant role in Harry's life earlier on. It could involve her being involved in some of Harry's adventures in a way that wasn't in the original books, adding new twists to the story.
One idea could be that they start to bond over their shared love for a particular magical creature. Maybe they both have a soft spot for Thestrals. As they spend time together taking care of a Thestral calf, their relationship blossoms.
One interesting plot could be how Harry and Lavender navigate their relationship while dealing with the chaos at Hogwarts. Maybe they face challenges from other students who don't approve of their pairing.
Perhaps a fanfic where Lily Potter's spirit is able to communicate with Harry Potter during his difficult times at Hogwarts. She gives him advice and guidance that helps him through his struggles, like dealing with Snape's complex feelings towards him, or facing the challenges of the Triwizard Tournament. This would add an emotional and magical element to Harry's journey.
A major theme is the exploration of Lavender's backstory. Writers often give her more depth by exploring her family, her dreams, and her insecurities. Another common theme is the power of forgiveness. Harry might forgive Lavender for her past behavior, or Lavender might forgive others. And the theme of unexpected relationships is also present. It shows how two characters who didn't interact much in the original series can have a meaningful relationship in fanfiction.
Another aspect is how their different Hogwarts houses (Harry in Gryffindor and Lavender in Gryffindor as well) could play a role in their relationship. They might have different views on Gryffindor values that could either bring them closer or create some tension. For example, Lavender's more flirty nature compared to Harry's often more reserved approach to relationships. Also, their shared experiences in the wizarding world during the events of the books, like the battles and the general atmosphere of Hogwarts, could be explored in a non - lemon fanfic to show how they might have bonded over these commonalities.
One plot idea could be that Crookshanks discovers a hidden passage in Hogwarts that leads to an ancient wizarding library. He then leads Hermione to it, and they find a powerful spellbook that helps them in their fight against the dark forces. Another could be that Crookshanks has a secret ability to communicate with other magical creatures in the Forbidden Forest and he enlists their help to save Harry from a dangerous situation. Maybe he can talk to the centaurs and they come to the rescue when Harry is surrounded by Death Eaters.