In some fanfictions, Hermione might use her intelligence and magic skills. For example, she could use a powerful spell to create a distraction at the Dursleys' place. Maybe a spell that makes all the dishes in the kitchen start flying around, causing chaos. Then, while the Dursleys are distracted, she could quickly grab Harry and apparate away to a safe place, like the Burrow or a hidden wizarding location she has prepared in advance.
It could be part of a plot where Draco is given an assignment by someone in the wizarding world to save Harry from the Dursleys. He initially does it for self - serving reasons like getting in good with certain powerful wizards who are concerned about Harry's well - being. But during the process, he actually starts to care about Harry.
One thing that could happen is that the wizarding world would be in chaos. The Death Eaters would be confused by Bellatrix's actions, and the Order of the Phoenix would be very suspicious. Harry would be in a difficult position, not knowing whether to trust Bellatrix or not.
Charlie might introduce Harry to the dragon world. Since Charlie works with dragons, this could be an exciting new adventure for Harry. It would also give him a new perspective on the magical world and something to focus on other than his difficult past with the Dursleys.
Some fanfictions depict Hermione using her knowledge of ancient magic. She discovers a spell that can create a portal directly into Harry's room at the Dursleys'. She steps through the portal, grabs Harry, and they both jump back through into a safe wizarding haven. It's really cool because it shows how Hermione's thirst for knowledge can be used to save her friend in unexpected ways.
One possible plot could be that Voldemort realizes Harry's importance in a different way. Maybe he sees that Harry has some power or knowledge that could be useful to him in the long run. So, instead of wanting to kill Harry, he decides to rescue him from the Dursleys to gain his trust and manipulate him later. For example, Voldemort might think that Harry has a connection to some ancient magic that only he can access, and by saving him, he hopes to get access to it through Harry.
Well, perhaps Fleur uses her Veela charm to intimidate the Dursleys into letting Harry go. She could arrive at Privet Drive in a blaze of magical beauty and power, and the Dursleys, being the cowards they are, would be too scared to oppose her when she demands Harry come with her.
She might drive the Dursleys crazy with her intelligence and magic knowledge. For example, she could accidentally use magic in front of them while trying to solve some household problems, which would surely shock them as they are so against magic.
In such a fanfiction, Hermione's encounter with the Dursleys could be full of drama. Since Hermione is a clever witch, she may use her magic knowledge to expose the Dursleys' ill - treatment of Harry. For example, she could magically make Dudley see how wrong his parents' actions are. At the same time, she may also try to bridge the gap between the wizarding world and the Dursleys, though it would be a difficult task considering the Dursleys' deep - rooted dislike for anything magical. However, Hermione's determination might bring some unexpected changes to the Dursleys' household.
In this kind of fanfiction, it could happen in various ways. Maybe Hermione discovers some evidence that Draco was wrongly accused. For example, she might find that certain spells were cast on Draco to make him seem guilty when he actually wasn't. So she uses her intelligence and knowledge of magic to expose the truth and save him from Azkaban.
In some fan fictions, Bill might use his experience and magical skills. He could arrive at the Dursleys' place under the guise of some official wizarding business. Once there, he realizes the horrible situation Harry is in. Maybe he convinces the Dursleys that it's in their best interest to let Harry go with him, using a bit of magic to persuade them subtly.