Well, in 'harry the lich fanfic', one interesting plot could be Harry's transformation into a lich and how he copes with his new undead state. Maybe he has to deal with the loss of his former humanity and the new powers that come with being a lich.
One possible plot is Harry's search for a way to reverse his lich state. He might embark on a journey to find ancient spells or artifacts that could restore his mortality. Along the way, he could meet various characters who either help or hinder his quest, and he would have to learn about the true nature of life, death, and magic in a whole new way.
Well, in some 'Harry is headmaster fanfic', there could be plots where Harry reforms the Hogwarts curriculum. He might introduce new magical subjects that were previously overlooked, like advanced Muggle Studies to improve the understanding between the wizarding and Muggle worlds.
Another plot might involve Harry forming alliances with some of the noble houses in Westeros. He could bring his unique perspective and skills to help them in battles or in diplomatic matters. He might introduce new forms of combat magic that give his allies an edge. And perhaps he has to navigate the complex web of relationships and loyalties in Westeros while staying true to his own values.
Well, one interesting plot could be Harry's adventures during naval training. He might face tough physical challenges and learn to work as part of a team. Another could be his encounters with unique characters on the ship, like an old - time sailor with lots of sea stories to tell.
In some harry and ginny wedding fanfic, there could be a plot where an unexpected guest arrives. Maybe it's a former Hogwarts classmate who has been away for a long time. Also, the preparation for the wedding might be full of chaos and fun. Ginny might be having trouble choosing her dress, and Harry could be nervous about his best man's speech. These little details can make the story really engaging.
One interesting plot could be the characters going on a magical camping trip during the vacation. They might encounter new magical creatures in the forest that are not well - known in the original books. For example, a group of friendly forest sprites that lead them to a hidden glade filled with enchanted plants.
In some 'harry time travels fanfic', Harry could time - travel to the time of the founders of Hogwarts. There, he could learn ancient magic directly from them, and maybe even influence the creation of Hogwarts' rules and traditions in a way that would have a positive impact on the present day Hogwarts.
Well, one interesting plot could be the baby showing early signs of magic. Maybe the baby accidentally makes toys float around the nursery, causing both Harry and Ginny to be both amazed and a bit worried about how to handle this early display of magic. Another plot could be the baby's first encounter with the Weasley family as a whole. All the aunts and uncles would be fussing over the little one, and there could be some really heartwarming and funny moments.
Maybe the butler has a mysterious past that is somehow connected to Harry's family. This connection could unfold as the story progresses, like the butler was once in the service of Harry's ancestors and now is back to fulfill an old prophecy or oath related to protecting the family heir.
One interesting plot could be that Harry meets Lily in a time - traveling scenario. He gets to have a conversation with his mother, learning things about his family that he never knew before.
Another plot could be that they find out they are related in a more profound way than just being friends. This discovery could lead to them exploring their family histories together and uncovering secrets that change their understanding of the wizarding world and their place in it.