Perhaps he would come across a group of students who are trying to form a secret club. Instead of reporting them, he decides to join them and help them make it a positive and educational club. They could study advanced magic together or explore the history of the wizarding world in a more hands - on way.
He could discover a hidden spell that was long forgotten. This spell might be related to the very foundation of Hogwarts. Albus, being curious, would then try to understand its origin and purpose.
As a roaming prefect, Albus could be involved in solving mysteries around Hogwarts. There could be a series of strange events happening, like portraits moving on their own or objects disappearing. Albus would use his observational skills and knowledge of the castle to figure out what's going on. He might find that there is a mischievous poltergeist causing trouble, but also discover that there is an underlying reason for its behavior, like it's trying to protect a hidden treasure in the school.
One possible fanfic could be about Albus Dumbledore's early days as a prefect. He might use his position to explore the hidden corners of Hogwarts. Maybe he stumbles upon a secret passage that leads to an ancient chamber filled with forgotten magic.
He could be injured in a magical experiment. For example, if he was trying to create a new spell with his friends in a secret place, and something went wrong. The spell could backfire and cause him an internal injury. His friends would then be faced with the dilemma of whether to tell the teachers or try to fix it themselves.
In this fanfiction, Harry becoming a prefect could lead to some interesting dynamics. He might have to deal with Hermione being jealous as she always thought she'd be the prefect. Harry would then have to balance his friendship with Hermione and his new role. Also, he could start new initiatives like a dueling club for students to practice self - defense.
Well, there are several factors. Firstly, if it gives a new perspective on Hogwarts life. Since prefects have a certain level of authority, seeing how they interact with teachers and students differently can be fascinating. Secondly, character development. If the fanfic focuses on a prefect's growth, like from being a rule - follower to a more independent thinker. Also, mystery and intrigue. Maybe there's a secret that only the prefects are aware of, or they are involved in solving a mystery that affects the whole school. All these elements combined can make a Prefect Harry Potter fanfic really interesting.
Maybe Albus has done something dangerous or disobeyed Harry's instructions. For example, if Albus got involved with some dark magic related stuff without Harry's knowledge, that would surely make Harry yell at him.
In such a fanfiction, Albus Potter might initially be intimidated by Snape's reputation. But he could gradually discover Snape's hidden qualities. Maybe Snape would become a mentor - like figure to Albus, guiding him in magic that he couldn't learn from others.
The fanfiction could show Albus Potter learning about the Marauders' values and how they formed their strong bond. He might be in a situation where he needs to form his own group of friends like the Marauders did. The Marauders could also help Albus deal with the pressure of being a Potter. For example, they could tell him how James Potter coped with all the attention he got, and this would give Albus some perspective on his own situation at Hogwarts.
A lesser - known character like Ernie Macmillan from Hufflepuff could be the main character. As a prefect, he could bring out the unique qualities of Hufflepuff house. He might have to deal with issues like other houses underestimating Hufflepuff students. His story could focus on how he promotes the values of hard work, loyalty, and fairness within the house and the school as a whole.
Well, perhaps Dudley would apologize for all the years of bullying. He might have a newfound respect for Harry after everything Harry has accomplished. Harry could then share some of his magical experiences in a more light - hearted way, like showing Dudley some harmless magic tricks.
He might encounter magical creatures that are native to the forest. For example, he could come across a group of centaurs. Centaurs in the 'Harry Potter' world are known for their wisdom and their own set of rules. They might either help Harry find his way out or be indifferent to his plight depending on how Harry approaches them.