What could happen next in Harry Potter fanfiction?

Well, it could go in many directions. They might travel to a previously unknown magical realm or encounter creatures that were only hinted at in the original series.

Well, if Harry Potter was kidnapped by Loki, it could be a total chaos. Loki might use Harry's magic for his own devious plans. Maybe he wants to take over Hogwarts using Harry's knowledge of the school's secrets. Or he could be trying to trade Harry for something valuable in the wizarding world. Another possibility is that Harry would try to outwit Loki with his own brand of cleverness and magic, leading to a battle of wits between the two.

Another scenario could be that Ginny accepts but on the condition that they go on an adventure first. They could travel around the wizarding world, visiting different magical places they've only heard about, like the hidden valleys in Romania where dragons roam, before settling down to plan their future together.

Well, if Harry Potter finds Excalibur, it could completely change the wizarding world. He might gain some new powers from the sword. Maybe he could use it to defeat Voldemort in a more epic way than with his own wand. It could also bring a new alliance between the wizarding world and some other magical beings who respect the power of Excalibur.

Well, he might find a world where magic has been completely integrated with Muggle technology. For example, broomsticks are now used for inter - planetary travel and there are magical apps on smartphones. Also, Hogwarts could be a much larger and more diverse place, with students from all over the universe coming to study.

Well, he could encounter some dark artifacts that have a strange pull on him. Maybe he stumbles upon a cursed object that starts to influence his thoughts in a negative way. Since Knockturn Alley is full of dodgy characters, he might also be recognized by some Death Eaters in hiding, which would put him in great danger.

Well, he might use the house elf to keep his new house in order. The elf could help with cleaning, cooking, and protecting the place from unwanted intruders. It would be interesting to see how Harry, who has always been against the unfair treatment of house - elves, would manage this new relationship with an elf he owns.

Perhaps Harry overhears a very private and heartfelt conversation between Ron and Hermione. He might realize that their relationship has deepened in a way he hadn't noticed before. This could make Harry feel a bit left out at first, but then he would probably be happy for them. He could also use this new knowledge to be more understanding of their actions and decisions in the future.

Well, one possibility is that he'd have to deal with all the social norms and expectations for girls in the wizarding world. Maybe she'd form different friendships, like getting closer to Hermione in a new way since they'd now share the experience of being female. And she might have a whole new perspective on the boys around her too.

Well, he might discover a whole new world of magic in that fanfiction. Maybe it contains spells that are not in the original books. He could get inspired to try out new things or it could even lead him to new adventures within the Hogwarts library, like finding a hidden section related to the ideas in the fanfiction.