What could be the plot in 'Harry Potter builds a harem fanfiction'?

Well, perhaps it could involve Harry using his fame and charm to attract a group of female characters. Maybe he meets them during his adventures and they gradually form a special bond with him, much like how he made friends in the original series, but with a more romantic undertone.

Well, Hermione is an obvious choice as she's not only smart but also very loyal to Harry. Ginny would be there for sure, given her love for Harry. Then there could be some less - known characters like Astoria Greengrass. She might be drawn to Harry's charisma. And don't forget about Nymphadora Tonks. Although she's older, in a fanfiction world, she could develop an unexpected attraction to Harry because of his brave and selfless nature.

Well, perhaps Harry Potter discovers some ancient magic that has the potential to create a stargate. He might use his knowledge from Hogwarts and the wizarding world to assemble the components of the stargate. Maybe he's on a quest to find a new form of magic or a lost spell that is only accessible through the stargate.

The plot could involve Harry Potter building a town that is a blend of the Muggle and magical worlds. He could build schools that teach both magic and Muggle subjects, houses that have both magical and non - magical features. He wants to create a place where wizards and Muggles can co - exist and learn from each other. This would be a revolutionary idea in the Harry Potter universe and would attract all kinds of people, leading to many adventures and challenges along the way.

The plot could involve Harry using his knowledge of spells and potions to create a unique starship. He could also recruit his wizard friends to help him. For example, Hermione could use her vast knowledge to research the best magical elements to incorporate into the ship's design, while Ron could provide his loyalty and physical strength for the more labor - intensive parts of the construction. And they might face challenges from the wizarding world, like the Ministry of Magic trying to stop them for fear of revealing magic to the Muggle world through their starship adventure.

Maybe Harry builds the house as a sanctuary for his friends who lost their homes during the war. He'd use his knowledge of magic and the help of Hagrid, who would supply some magical building materials. The house could have rooms that change according to the mood of the occupants, just like the rooms in Hogwarts.

Well, perhaps Harry could be building the boat to escape from some new danger in the wizarding world. Maybe he's on the run from a new dark wizard and needs to cross a large body of water to reach safety.

Perhaps Harry builds the island to start a new school of magic. He could design it with unique classrooms, like ones underwater or in the treetops. He'd invite witches and wizards from all over to teach different forms of magic that were previously overlooked in Hogwarts.

Well, perhaps Harry could use magic to power the robot. He might build it to help him in his battles against the Dark Arts. Maybe it could detect dark spells or even protect Hogwarts.

Well, perhaps Harry Potter decides to build a village for the magical creatures who are homeless. He might use magic to create little cottages and gardens. He could also set up a school in the village for the young creatures to learn magic in a safe environment.