A great plot for Harry and Hermione's wedding fanfiction could be that they face some sort of dark magic threat right before the wedding. They have to use their combined skills and the help of their friends to overcome it. Then, the wedding becomes not just a celebration of their love but also a victory over evil. For the actual wedding, Hermione could wear a dress that has some magical properties, like changing colors to match her mood, and Harry could have a special wand that he uses to create a unique display of magic during the ceremony.
A really interesting plot could be that right before the wedding, a dark wizard from Ron's past tries to disrupt it. Hermione and Ron, along with their friends, have to fight off the threat while still making sure the wedding goes on as planned. It would add a lot of action and adventure to the fanfiction.
One idea could be a wedding between a wizard from Gryffindor and a witch from Slytherin, which could cause a stir among the Hogwarts alumni. They might have to overcome the old prejudices of their houses. Another could be a wedding set during a time of peace after the battle of Hogwarts, with characters like Harry and Ginny as guests, and the wedding could incorporate a lot of traditional wizarding wedding elements like flying doves made of light magic.
Maybe there could be a plot where they face opposition from some quarters. Some might not approve of a union between Harry and Daphne due to their houses' historical rivalries. They would then have to overcome these prejudices and prove that their love is stronger than the old grudges. This could involve them going on a quest together to show that they are a united front and are meant to be together.
One idea could be that they have a secret wedding. Hermione and Draco realize their love for each other in a post - war world where they are both trying to heal. They keep their relationship a secret at first because they know it will be controversial. They finally decide to get married in a small, private ceremony in a secluded forest. Only a few close friends, who have come to accept their relationship, are present.
Well, perhaps in the fanfiction, there is a prophecy that their unborn child will be the key to a great change in the wizarding world. This makes them a target for both good and bad forces. They struggle with the decision of whether to keep the baby's existence a secret or to embrace it publicly. And as Hermione's pregnancy progresses, they face many challenges, both physical and emotional, as they prepare for parenthood in a world full of magic and danger.
One plot idea could be that Hermione and Harry discover an old, mysterious orphanage during one of their adventures. Inside, they find magical artifacts that are linked to their pasts. Another could be they start an orphanage of their own for wizarding children who have lost their families in the war. It could be a place of learning and safety.
In this type of fanfiction, it might be that Harry has been misled by false prophecies. He kidnaps Hermione thinking he is doing the right thing. As the story unfolds, Hermione uses her intelligence to make Harry see the truth. They then team up to face the real threat that was behind the false prophecies all along. It could also involve a lot of emotional turmoil between the two characters as they deal with the situation, with their friendship being put to the test.
Well, perhaps they have a child who is really interested in Muggle studies, much to the amusement of Harry who has some Muggle - like tendencies. And they struggle a bit with how to balance their child's interest in Muggle things with the wizarding world they live in. Also, there could be a plot where the family has to deal with some old enemies of Harry's who are seeking revenge, but this time they have to protect not just themselves but also their child. It could show how they use their combined skills and knowledge to keep their family safe.
One idea could be that their child discovers a hidden magical ability that neither Harry nor Hermione possess. For example, the ability to communicate with magical creatures in a unique way. Another could be that the child gets into trouble at Hogwarts by accidentally stumbling upon a long - forgotten and dangerous spell.
One idea could be a story where Draco, Harry and Hermione are forced to work together on a special magical project for the Ministry. They start off hating each other but gradually come to respect one another's skills. Another plot could involve them getting trapped in an alternate magical dimension where they have to rely on each other to find their way back. Maybe Draco has some knowledge of the dark magic that created the dimension, Harry has his Gryffindor courage to lead them through dangerous areas, and Hermione uses her vast knowledge to figure out how to break the spell that trapped them.