Snape's patronus being a doe in fanfictions often because it was his love for Lily that was a central part of his character. In the original story, his doe patronus was a symbol of his love for her. Fanfiction writers like to explore this aspect further, so they keep using it as it is such a powerful and poignant symbol of his unrequited love.
One interesting Snape patronus fanfiction is 'The Silver Doe's Secret'. It delves into the significance of Snape's doe patronus and its connection to his unrequited love for Lily. Another is 'Snape's Patronus Revelation' which explores how his patronus might have changed over time due to different events in his life.
One possible theme is unrequited love. Snape loved Lily deeply, and their Patronuses, both being doves perhaps in some fanfictions, could symbolize that love. His Patronus could be a constant reminder of his love for her, even though she was with someone else.
In a fanfiction, Snape's Patronus could be the key to saving Lily from a dark magic curse in an alternate universe. Since the Patronus represents love and protection, Snape's doe Patronus might be able to break the curse that has trapped Lily's soul. As he sends his Patronus towards her, it glows with a powerful light that gradually dispels the dark magic surrounding her.
They're interesting because it's a unique take on two characters who had a lot of animosity in the original story. The Patronus aspect adds a magical and somewhat spiritual element to their relationship, allowing for new interpretations.
Well, it really depends on the fanfiction author's creativity. Some might give her a Patronus that reflects her own unique personality traits. For example, if she's portrayed as very brave and fierce in a particular fanfic, her Patronus could be a lioness, representing her courage and leadership. Another possibility is that it could be a bird, perhaps a phoenix, which would tie in with the magical and powerful nature often associated with the Potter family.
In some fanfictions, Snape's boggart being his father might be due to the abusive nature of their relationship in the original lore. His father was a Muggle who perhaps made Snape's childhood miserable, so it's a deep - seated fear that haunts him even in fan - created stories.
In some fanfictions, the Basilisk could be reimagined in a different light. Maybe it's not just a mindless monster but has some sort of deeper purpose or connection to the Patronus magic. For instance, a fanfic could show that the Basilisk was once used in an ancient spell that now affects how modern - day Patronuses work. This would add a whole new layer of mystery and intrigue to the Harry Potter universe.
One possible fanfiction could be where Harry has to conjure his Patronus in the courtroom to prove his innocence. Maybe he's wrongly accused of using dark magic, and the Patronus is the only way to show his pure intentions.