Well, perhaps the human has a special ability like being able to create amazing music. Pinkie Pie discovers this and convinces the human to perform at a big concert in Equestria. Along the way, they face some challenges like finding the right instruments in Equestria, but with Pinkie Pie's enthusiasm and the human's determination, they pull it off. This could lead to a closer bond between them and new cultural exchanges between the human and pony worlds.
One idea could be a human arriving in Equestria and Pinkie Pie being the first to befriend them. She shows the human all the fun and unique things in Equestria like the Sugarcube Corner treats. Another could be the human and Pinkie Pie working together to plan a huge celebration for all of Equestria, bringing in elements from the human world to make it extra special.
The Cutie Mark Crusaders could be side characters. They would be super excited to meet a human and might follow the human and Pinkie Pie around, getting into all sorts of innocent mischief. Princess Celestia or Princess Luna could also make an appearance, perhaps having some sort of important role related to the human's presence in Equestria, like making sure the human doesn't disrupt the balance of the land.
A more emotional plot could be where Fluttershy is feeling really down and Pinkie Pie tries to cheer her up in her own unique, over - the - top way. At first, Fluttershy is a bit overwhelmed, but then she realizes how much Pinkie Pie cares and they grow closer through the process. This can involve Pinkie Pie planning a series of small, fun events just for Fluttershy to make her smile again.
One idea could be a crossover where Naruto and his friends end up in Equestria and meet Pinkie Pie. They could go on an adventure together, like trying to stop an evil force that threatens both their worlds. Another idea is that Pinkie Pie somehow gets ninja powers and joins Naruto's team on a mission in the Naruto universe.
One plot idea could be that Pinkie Pie discovers she's pregnant and has to deal with the changes in her daily life. She might struggle to throw her usual energetic parties while also taking care of herself. Another could be that her friends in Ponyville rally around her, each offering their own unique support. For example, Twilight could offer to help with any magic - related pregnancy issues, and Applejack could provide lots of fresh apples to keep her healthy.
One common theme is the exploration of cultural differences. Since Shining Armor is often depicted as a pony and Pinkie Pie as well, in a human - pony relationship, there's a lot to unpack about how their different 'cultures' interact. Another theme could be friendship evolving into something more romantic. They start as friends perhaps in a pony - centric world and then as humans, their relationship deepens.
Perhaps the OC has a special talent related to baking, like creating unique and magical pastries. Pinkie Pie discovers this and they team up to create the most amazing party treats ever. They could go on adventures together to find rare ingredients and along the way, form a strong friendship.
Well, you can try looking on some popular fanfiction websites like Archive of Our Own. Just search for 'pinkie pie x shining armor human' there, and you'll likely find a variety of stories. Some might be about their adventures in a human - pony hybrid world, while others could focus on their relationship development in a unique setting.
One idea could be a human with unique skills, like being a great artist, arriving in Equestria. The ponies are fascinated by the human's different art style and the human has to learn about Equestrian art in return. For example, the human could introduce the concept of abstract art to the ponies, while learning about the magical paintings in Equestria.
There could be a 'bubbleberry x pinkie pie fanfiction' where they plan a huge party for all the ponies in Equestria. Pinkie Pie brings her party - planning expertise and Bubbleberry could contribute something unique like special bubble - themed decorations.
There might be a fanfic where Pinkie Pie accidentally causes chaos during one of Shining Armor's important school presentations in Equestria Girls. And then they have to work together to fix the mess she made. This could lead to an unlikely friendship and some really funny and heartwarming moments as they learn more about each other.