One possible storyline could be that Steven Stone, with his knowledge of stones and gems, discovers some magical gems in the Harry Potter universe. These gems could have unique magical properties that are unknown to the wizards. He teams up with Harry Potter to protect these gems from dark wizards who want to use them for evil. For example, the gems might be able to enhance spells or open portals to other magical dimensions.
Another storyline could be a crossover where Steven Stone is somehow transported to Hogwarts. He becomes fascinated with the magic there and starts to study it. Harry Potter, on the other hand, is intrigued by Steven's knowledge of stones. They exchange knowledge and together develop new magical techniques that combine the power of stones and traditional magic spells.
Another storyline could be that Harry goes to Bulgaria to hide from the threats in the UK wizarding world. While there, he has to adapt to a new culture and way of life. He could start teaching at a Bulgarian wizarding school, sharing his knowledge of Defense Against the Dark Arts. He might also fall in love with a Bulgarian witch and have to deal with the cultural differences in relationships.
In this fanfiction, it could be that Hogwarts has been shut down due to some great danger. Harry Potter then decides to gather a group of like - minded young wizards and witches. They form their own makeshift magical school in a hidden location. They have to learn magic without the guidance of Hogwarts' professors, so they rely on old magic books and their own wits to develop their magical abilities and face the threats that led to Hogwarts' closure.
One possible storyline could be that Harry, after defeating Voldemort, decides to break free from the traditional wizarding world norms. He gets tattoos that represent his journey, like a lightning bolt for the scar on his forehead but in a more artistic way. For piercings, he might get an earring that has a magical charm on it. Another idea is that he gets tattoos as a form of protection spells, in a new and edgy way that the wizarding world has never seen before.
Another storyline could involve the sister being in a different magical school all this time. When she discovers Harry's situation, she transfers to Hogwarts. She then tries to fit into the Hogwarts environment while also trying to figure out how to use her knowledge from her previous school to aid Harry. She might bring new ideas about magic that are different from what they teach at Hogwarts.
One possible storyline could be that Harry discovers a hidden room filled with family portraits. As he looks at them, the portraits start to come to life and tell him stories about his family's past that he never knew. Maybe they reveal secrets about his parents' time at Hogwarts or their early relationship.
One possible storyline could be that Harry Potter, through some magical mishap, ends up in the X - Men universe where he meets Jean Grey. They could discover that magic and mutant powers have some unexpected similarities and start to work together to face a common threat, like a dark wizard who is also trying to use mutant powers for evil.
One possible storyline could be the children of the original characters starting their own adventures at Hogwarts. They might face new threats that are related to the past but in a different way. For example, a new dark wizard could be trying to revive the ideas of Voldemort and the kids have to stop it using the knowledge passed down from their parents.
One possible storyline could be that the Dursleys' pet, perhaps their cat, discovers Harry's wizarding abilities before the Dursleys do. It might then have some comical or tense interactions with Harry, like trying to stop him from using magic in the house for fear of getting in trouble itself.
One possible storyline could be that Harry is on the run from dark forces again and the tent serves as his only safe haven. He might be using magic to conceal the tent and make it a cozy, self - sufficient living space, with magical wards all around it for protection.
Perhaps in the fanfiction, Harry discovers that his grandparents had a hidden magical legacy. They had been working on a powerful charm to protect the Potter family long before Harry was born. Harry finds clues about this charm and with the help of his friends, he tries to complete it, believing it could be the key to finally defeating Voldemort.