A very interesting plotline is when their children have to face a new dark force in the wizarding world. This forces them to rely on the skills and values taught by Ron and Hermione. The story might also include how they use their parents' old friends and resources to combat this threat, while also growing as individuals in their own right.
A common plotline is where they decide to explore the Muggle world together. Ron is always curious about Hermione's Muggle - born background. They get into all sorts of comical situations as Ron tries to understand things like cars and telephones. And of course, their love for each other grows even deeper during this exploration as they see new sides of each other that they hadn't before.
A plotline where they form a secret club at Hogwarts. They have to keep it a secret from the teachers and other students while they work on a special project. It could be something like creating a new spell or trying to communicate with a magical creature that has never been done before. Their different personalities would lead to both funny and tense situations within the club.
One interesting plotline could be that after a long time apart, Ron and Hermione reunite during a dangerous mission. They realize that their feelings for each other are still as strong as ever, and they have to work together to overcome the challenges in the mission while also rekindling their relationship. Another plotline might be that they reunite at a Hogwarts reunion. There, they see how much they've both changed yet how their connection remains deep. They then start to share all the things that have happened to them in the years since they last saw each other.
One plotline could be that their hand - holding is a magical bond. For example, in some fanfics, when they hold hands, they can share thoughts or feelings. This adds an interesting layer to their relationship and can lead to some really cute and intense moments.
One common plotline is exploring their relationship in more depth during their Hogwarts years. For example, a fanfic might focus on how they dealt with jealousy issues when Hermione was spending time with Viktor Krum. Another plotline could be set after the war, where they face new challenges as a couple, like dealing with the post - war trauma together. Some fanfics also like to imagine what would have happened if they got together earlier in the series.
Another plot could involve how their friends, like Harry, react to the news. Harry might offer his support and share his own experiences of growing up without parents, vowing to be a great godfather. There could also be a sub - plot about how Hermione's pregnancy affects her studies or research in the magical field.
Some fanfictions focus on their adventures in a parallel magical universe. In this universe, the rules of magic are slightly different. For instance, they might find that instead of using wands, magic is channeled through certain crystals. Harry, Ron and Hermione would need to adapt quickly to this new form of magic and also deal with the different threats and mysteries that this parallel universe holds. They might also meet alternate versions of themselves, which could lead to some really interesting character - development moments.
Sometimes, they get injured accidentally, like in a potions accident gone wrong in the Hogwarts dungeons. This then leads to a series of events where they learn more about each other's vulnerabilities and strengths. It can also bring out the protective sides of their friends, like Harry trying everything he can to make sure they are okay.
A plotline could involve Ron and Hermione dealing with the stress of impending parenthood while also handling their jobs at the Ministry. Hermione might be worried about taking time off from her important research work, and Ron could be trying to prove that he can be a reliable provider. They could also face some magical mishaps during Hermione's pregnancy, like strange spells affecting the baby's nursery that they have to figure out together.
One interesting plotline could be that their soul bond allows them to share magical abilities. So, Hermione can access some of Ron's natural charm magic, and Ron can get a boost in his intellectual capabilities like Hermione's. This creates a unique dynamic where they become an even more powerful duo in the wizarding world.