One interesting scenario could be that they have a dinner by the lake at Hogwarts. Ginny might have prepared all of Harry's favorite foods, like treacle tart. They could be reminiscing about their adventures at Hogwarts while enjoying the meal.
In some 'Harry and Ginny Dinner Fanfiction', they could be having a dinner with their friends. It's a big gathering and they all contribute to the meal. Harry and Ginny might share a secret look across the table, thinking about how far they've come from when they first met. They could also be sharing stories of their recent travels to different magical places with their friends.
Maybe in the fanfiction, it's a dinner to celebrate their anniversary. Ginny dresses up beautifully and they have a candle - lit dinner. They talk about their future, like having a family of their own and what kind of magic they will teach their kids. There could be some cute moments where Harry gets all shy and Ginny teases him.
One interesting scenario could be them exploring hidden parts of Hogwarts together. They might find a secret room filled with old magic artifacts that have been long forgotten. This could lead to an adventure where they have to figure out how to use or protect these items from falling into the wrong hands.
In some fanfictions, they could be studying together in the library but also stealing glances and little touches. It adds a cute and romantic aspect to their relationship while still being in the Hogwarts setting. For example, Ginny might help Harry with his Potions homework, and they end up sharing a sweet moment over a difficult potion recipe.
Well, in some fanfictions, a great scenario is when Harry chooses 'dare' and Ginny dares him to go into the Forbidden Forest at night without his wand. As for truth, Ginny might be asked the truth about whether she ever had a crush on one of Harry's friends. Also, Harry could be dared to imitate Professor Snape's voice during a truth or dare session.
Another scenario could be them working in the field of magical creature conservation. They might team up to save an endangered species. Harry's experience with magical creatures like Buckbeak and Ginny's love for all things magical could lead them to create a sanctuary or a breeding program for the creatures.
One interesting scenario could be Ginny getting ready for the Yule Ball with the help of her friends. They might be fussing over her dress, trying different hairstyles, and giving her advice on how to act around Harry at the ball.
In some fanfictions, there might be a scenario where Harry and Ginny get engaged during a dangerous adventure. They could be on a mission to defeat a new dark wizard, and in a moment of calm before the final battle, Harry realizes that he doesn't want to face anything else without Ginny by his side, so he proposes. Or perhaps it happens during a celebration at Hogwarts. After a big victory for the school, like winning the House Cup, Harry takes Ginny to the Astronomy Tower and asks her to marry him. There could also be a situation where Ginny is the one who takes the lead. She might plan a special date and then propose to Harry, showing her strong and independent character.
In some fanfictions, it could be that they are caught by Hermione and Ron, which leads to a lot of teasing and awkward moments. For example, Ron might make a big fuss about it while Hermione tries to be more diplomatic.
One interesting scenario could be when a new member joins the dinner. Maybe a young sidekick like Robin is invited for the first time. There's a lot of awkwardness as he tries to fit in with the more serious Bat - family members. Alfred tries to ease the tension by serving everyone's favorite dishes.
In some fanfictions, the wedding might be in danger. Maybe Voldemort's remaining followers try to disrupt it. This would lead to an exciting showdown where Harry, Ginny, and their friends have to use their magic skills to protect the wedding. It could also be a chance for Harry to show how far he has come since the end of the war, using his leadership and power to keep everyone safe while still enjoying his big day.
One possible scenario could be that Ginny meets an old acquaintance who has changed a great deal and she starts to have feelings for this person while still being with Harry. Maybe they share a common interest that she feels Harry doesn't understand. However, this goes against Ginny's strong character in the original series, so it's a very different take in fanfiction.