A plotline could be that Harry is cursed during a duel, and the curse affects his legs, forcing him to use a wheelchair. He then has to find a way to break the curse while dealing with the limitations of the wheelchair.
In the world of Harry Potter fanfiction, Harry might need help in various ways. For example, he could need help dealing with a new dark wizard threat that the original books didn't cover. Maybe he's struggling with his post - war trauma and needs the support of his friends more than ever. Another possibility is that he's in a situation where he has to learn a new and difficult magic spell to save someone he loves, but he can't seem to master it on his own.
The best element is often the exploration of disability in a magical world. It shows that even with a physical limitation like needing a wheelchair, magic can still be harnessed. For example, a wheelchair could be enchanted to climb stairs like a charmed stairway at Hogwarts.
In a fanfiction, the staff could be a key to a hidden magical realm. Harry, with the help of his friends, tries to unlock the secrets of the staff to enter this realm. Along the way, they face challenges like dark magic spells guarding the staff and the mystery of its true origin, which could lead to a great adventure and self - discovery for Harry.
Let's say Harry needs help in a fanfiction where he's wrongly accused of a crime he didn't commit at Hogwarts. His friends would need to rally around him to prove his innocence. Hermione would use her research skills to find evidence that clears Harry's name, while Ron would stand by his side and defend him physically if needed. It would be a story about loyalty and the fight against false accusations.
It can be developed by focusing on how his daily life at Hogwarts changes. For instance, the staircases that move could be a huge obstacle. So the fanfiction could explore how he and his friends come up with solutions like using magic carpets or levitating charms. Also, his broom - flying might need to be reimagined. Maybe he gets a special broom that can be attached to his wheelchair and he can fly around in a different but still exciting way.
A possible need for Lucius in fanfiction is to preserve the pure - blood ideology. He was a strong believer in pure - blood supremacy in the original series. So in fanfictions, he might be trying to spread this ideology further, perhaps by influencing the Ministry of Magic or starting some sort of pure - blood movement. He could also need to maintain his social connections. The Malfoy family was well - connected, and he would want to keep those relationships intact for his family's sake.
You should include some of the other characters as well. For instance, Hermione could be scolding Harry for not going before they left on their adventure. Ron could be making jokes about it. Also, don't forget to add some magic elements. Maybe Harry tries to use a spell to hold it in but it backfires in a funny way.
One possible fanfiction could be 'Harry's New Mobility' where Harry gets injured during a battle and has to use a wheelchair for a while. It shows his struggle and how his friends adapt to help him.
One interesting story could be about Harry having to use a wheelchair after a particularly dangerous encounter with a dark wizard. In this fanfiction, he might have to rely on his friends more than ever, and they could come up with magical ways to make the wheelchair more useful, like adding spells for levitation or speed. It could also explore how he copes with his new situation while still being the hero we know.