First of all, Harry could offer the orphans protection. If there were any threats from the wizarding world or even from the Muggle world like bullies or bad caretakers, he could step in. He would also introduce them to a world of magic, which would be a huge change. They might start to see things in a different way, with more wonder. He could also use his influence to get better resources for the orphanage, like new clothes, better food, and educational materials. This would not only improve their living conditions but also give them a better start in life. And on an emotional level, his friendship and support would mean a lot to orphans who might not have had much of that before.
It could lead to a big change. Maybe Harry and Dudley would learn more about Severus and develop a different relationship with him.
Perhaps it's a girl orphan who was found wandering near the Forbidden Forest. She has no memory of her past but shows great potential in potions. Harry feels a connection to her because she seems so lost, just like he once was. So, he decides to take her in as the first orphan in his new orphanage.
Harry may become more empathetic towards outcasts. Growing up in an orphanage, he is surrounded by other children who have been abandoned. This could make him more understanding of those who are on the fringes of society, not just in the Muggle world but also in the wizarding world. For instance, he might be more inclined to befriend house - elves or other marginalized magical creatures. He could also be more protective of his friends, as he values the relationships he forms in the orphanage more since they are his only real family for a long time.
The revolver would be a huge shock to the magical world. In the normal Harry Potter story, the battles are fought with magic. But if Harry has a revolver, it's like bringing in a completely different kind of power. It could change how Harry approaches danger. Maybe he would rely on the revolver in situations where magic might not work as well, like in close - quarters combat in a non - magical area. It might also make the Ministry of Magic re - think their laws about Muggle weapons in the wizarding world. After all, if Harry Potter is using one, it could set a new precedent.
One idea could be that Harry uses his fame and wealth to completely renovate the orphanage. He could introduce magic in a subtle way, like using magic to make the food taste better or the beds more comfortable for the kids. Another plot could involve Harry finding out that some of the orphans have latent magical abilities and he decides to mentor them privately before they are old enough to go to Hogwarts.
Harry would likely be more confident. With his parents alive, he would grow up with their love and support, not having to face the same insecurities. He might be less impulsive as he would have their guidance. For example, he wouldn't have to jump into dangerous situations alone as he'd have his parents to back him up.
It changes the setting completely. Instead of Hogwarts or other known places, he's in a tree. This would mean different interactions, like with forest creatures instead of classmates.
Harry would grow up with his parents, which means he would have a much more stable and loving childhood. He would not have to face the Dursleys' abuse. His parents could teach him magic from a very young age, so he might be more advanced in his magical abilities. Also, he would have a strong family support system, which could make him more confident and less self - doubting.
They might become closer friends. Cedric could be grateful to Harry for trying to save him during the Triwizard Tournament, and Harry would be glad that Cedric survived. They could start sharing their experiences and knowledge about magic more often, and perhaps even train together to become better wizards.
His presence could speed up the journey of the Fellowship. Harry's magic could be used to quickly cross difficult terrains or overcome obstacles that the original Fellowship had to struggle with. For example, he could use a spell to create a bridge over a chasm instead of having to find a way around it.