She could get the eye patch in a training accident. It makes her feel self - conscious at first, but then she realizes it doesn't change who she is. Weiss could be the one to help her come to terms with it by saying something like 'Your strength is not in your eyes, but in your heart'.
The eye patch could be a result of a curse. Ruby has to find a way to break the curse while still fighting Grimm. Maybe she has to go on a quest to find a rare flower that can reverse the effects of the curse. Along the way, she meets new allies and discovers more about her own abilities.
In a fanfiction, the eye patch could be a symbol of a new era for Ruby. After a major event in the RWBY world, she decides to wear an eye patch as a sign of her new resolve. It could be related to a new power she has awakened or a new responsibility she has taken on. She then becomes an inspiration for others in the story, showing that even with a setback like losing an eye, she can still be a great hero.
One possible fanfiction could be about Ruby getting an eye patch after a dangerous battle. Maybe she loses her eye while protecting her friends from a powerful Grimm. In the fanfiction, she could struggle with the change in her appearance at first but then grow to see it as a badge of honor.
Well, one plot could be that Ruby's mother faked her death and is actually alive in hiding. Ruby discovers some clues that lead her to believe this and goes on a journey to find her mother. Along the way, she has to face various challenges and enemies who are also after her mother for their own reasons.
One idea could be Ruby adjusting to her new cyborg body and the enhanced abilities it gives her, like super - strength or advanced weaponry integration. Another could be her facing discrimination from some in the RWBY world who fear or mistrust cyborgs.
One plot idea could be Ruby discovering she has werewolf abilities during a mission. She has to learn to control it while still fighting Grimm. Another could be that in a werewolf form, Ruby has enhanced senses that help her track down a powerful and elusive enemy. Or perhaps she forms a pack with some of her friends who also get werewolf-like powers and they have to protect Vale from a new werewolf - Grimm hybrid threat.
One idea could be Ruby discovering she has some cheetah - like abilities. Maybe she's faster than ever and has to learn how to control this new power. It could add an interesting dynamic to her combat style and how she interacts with her team.
One idea could be that Ruby and Coco team up for a special mission in a dangerous, uncharted part of Remnant. They face new Grimm and have to rely on each other's unique skills to survive. Coco's fashion - sense - related weaponry could combine with Ruby's speed and scythe skills in interesting combat sequences.
A really interesting plot would be if Ruby's Reaper form was somehow connected to an ancient prophecy in the RWBY world. Maybe it was foretold that a Reaper - like figure would either save or doom Remnant. This would put Ruby in a very difficult position, with different factions having different views on her and her new form. Also, a plot where Ruby has to team up with some unlikely allies while in her Reaper form to take on a common threat could be cool. These allies could be former villains who see the greater danger that requires Ruby's power.
One idea could be Ruby having to relearn her combat skills while being deaged. It would add an element of struggle and growth as she tries to regain her former abilities. Maybe she forms new friendships with characters she already knew in a different way because of her new, younger perspective.
One plot idea could be Ruby discovers she has werewolf abilities during a mission in a forest. She has to learn to control it while still fighting the Grimm. Another could be that there's a curse in Beacon Academy that turns Ruby into a werewolf, and her friends have to find a way to break the curse without hurting her.
A third plot idea could be Ruby having to face an ancient vampire threat that is related to her new condition. Maybe she discovers that she was turned into a vampire as part of a bigger plan by an evil vampire lord, and she has to stop this villain while also coming to terms with her own vampirism. This could involve her learning about vampire lore and using it to her advantage.