Another plot could be that Ron and Harry are transported back in time to when their parents were at Hogwarts. They could interact with the young versions of their parents and other characters from that era. It would be interesting to see how they influence events in the past while also trying to find a way back to their own time.
One idea could be them starting a magical business together. They use their unique skills, Ron's strategic mind from all those wizard chess games and Harry's courage, to create something like a magical security firm.
Another plot could be that Ron and Harry find a hidden, ancient magic in the Forbidden Forest. This magic gives them the ability to communicate with magical creatures in a much deeper way. They use this new - found ability to unite the different factions of magical creatures against a common enemy, like a dark wizard who wants to use the creatures for his own evil purposes.
One interesting fanfiction could be where Harry and Ron discover a hidden chamber in Hogwarts that has secrets about their families. They embark on a journey to uncover the truth, facing various magical obstacles along the way.
One plot idea could be Rose Weasley finding an old diary of Harry's from his Hogwarts days and through it, she discovers a side of Harry she never knew. It could lead to a great adventure as they try to figure out some secrets hinted at in the diary.
One idea could be the twins inventing a new type of magical prank product that has unexpected effects on Hogwarts. For example, it might make the staircases act even more erratically than normal, causing chaos throughout the school.
Well, there could be a plot where Rose Weasley accidentally travels back in time and meets a young Harry Potter. This could lead to some interesting interactions as she tries to figure out how not to disrupt the timeline while also getting help from him for something in her own time. Also, a story could revolve around Rose Weasley being given a task by the Ministry of Magic that Harry Potter had once attempted but failed, and she has to figure out how to succeed with his guidance. And perhaps a plot where they both get caught in a magical trap and have to use their combined knowledge and skills to escape.
An interesting fanfic idea might be Molly Weasley's encounter with a long - lost relative who brings some sort of mystery or trouble to the family. This would put Molly in a position to protect her family while also dealing with family secrets. Another idea could be a fanfic that shows Molly's reaction and adjustment to the post - Voldemort wizarding world, especially with all the changes in society and magic.
One idea could be exploring how they handle their kids' magical education. Maybe one of their children has a special ability that requires unique teaching methods. Another could be a story about a family vacation where they visit a new and mysterious magical place and encounter various adventures. Or perhaps a plot where they have to deal with an old enemy from their Hogwarts days who resurfaces and targets their family.
One plot idea could be that Draco and Ron are forced to work together on a school project. They start off hating each other but gradually come to understand and respect one another as they see each other's strengths and insecurities. Another idea is a time - travel fanfic where they go back in time and have to change an event at Hogwarts that affects both their families. A third plot could be that they both get lost in the Forbidden Forest together and have to rely on each other to survive, which leads to a new - found friendship.
Perhaps they start a magical creature protection club together. Fem Harry Potter, with her compassion, and William Weasley, with his family's love for all things magical, recruit students from all houses. They face opposition from some traditionalist teachers who think it's a waste of time, but they persevere and make a real difference in the treatment of magical creatures at Hogwarts.