Another scenario could be the family dealing with the challenges of having a child with special magical abilities. It would show how Harry and Ginny support and guide the child. In the fanfic, perhaps their eldest child shows signs of being a powerful seer, and they have to figure out how to help the child control and understand this gift. They would need to consult with Hogwarts professors and other magical experts. This would also involve protecting the child from those who might want to use their power for wrong reasons.
Another scenario is that the room transforms into a time - traveling portal. Harry and Ginny accidentally step into it and end up in a different era of Hogwarts. They have to figure out how to get back while also dealing with the different magical rules and customs of that time. This adventure tests their relationship and their knowledge of magic.
Another scenario could be Harry and Ginny using the Deathly Hallows in a unique way. For example, they might figure out a way to use the Resurrection Stone to communicate with the dead in order to gain crucial information about Voldemort's weaknesses. This could add a whole new layer of mystery and magic to the story.
One possible scenario could be that Harry finally finds the courage during a quiet moment at Hogwarts, perhaps in the Gryffindor common room by the fireplace. He might stutter a bit at first, but then clearly say his feelings. Another could be that it happens during a dangerous adventure when he realizes he can't hold his feelings in any longer, fearing he might lose Ginny. Maybe he confesses after Ginny has been in some sort of danger and he realizes how much she means to him.
One interesting scenario could be them renovating their home at the Burrow. Harry might use his magic to make some unique changes, like creating a hidden room for his memories of his parents. Ginny could be in charge of decorating, adding a Quidditch - themed corner. Another could be their travels. They might visit different wizarding communities around the world, learning new spells and making new friends.
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.
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.
A great scenario in a Ginny and Harry get married fanfic would be a destination wedding in a far - flung magical place. Maybe they choose a wizarding island where they can have the ceremony on the beach under a starlit sky filled with magical constellations. Another scenario could be that they get married in a rebuilt Hogwarts, with the castle being a symbol of their past and their future together. And then there could be a scenario where Ginny and Harry have a very modern - wizarding wedding, with new spells and charms being used for the decorations and entertainment that no one has seen before.
One possible scenario could be that Ginny and Harry are in the Gryffindor common room. Ginny has had a long day of Quidditch practice and studying. She sits next to Harry on the couch, and as they are chatting softly about their day, her eyes start to droop. Harry notices but doesn't want to disturb her, and soon she falls asleep on his shoulder. Harry then just sits there, feeling a warm sense of protectiveness and contentment.
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.