One idea could be a time - travel plot where a character from Canterlot High goes back in time to the founding of the school and has to make sure certain traditions are established correctly. Another could be a story about a new student at Canterlot High who has a special power and has to learn to control it while fitting in with the existing groups, like the Rainbooms or the Shadowbolts. A third idea is a mystery - solving plot where something precious is stolen from the school and the students have to work together to find it.
One interesting plot idea could be a mystery during the wedding. For example, a valuable item goes missing right before the big moment. Another could be a character from the guests' past shows up unexpectedly and has some unresolved issues with the bride or groom. A third idea might be that there are some magical mix - ups that cause comical chaos during the ceremony.
One interesting plot could be the addition of new characters to the wedding scene. For example, a long - lost relative of one of the main ponies shows up and causes some chaos but also adds a touch of mystery and family drama.
One idea could be a pony being reborn with memories of a past life in a different pony world. They could use that knowledge to bring about positive changes in Equestria, like finding new ways to solve friendship problems.
One idea could be that the Dazzlings try to reform and join the main group of ponies in Ponyville. They struggle to overcome their past of using dark magic to steal harmony and learn to use their powers for good.
Well, a plot could involve a villain trying to steal all the cupcake recipes in Ponyville. The ponies then have to work together to protect their precious recipes. It could also be about a pony who has lost their sense of taste and has to go on a journey to regain it by trying different cupcakes. Or perhaps there's a mystery surrounding an ancient cupcake recipe that holds a great secret.
Sunset Shimmer is extremely popular. She has a complex backstory, having once been a villain but then redeemed herself. Her journey of self - discovery and growth makes for great fanfiction material. Then there's Twilight Sparkle, who brings her book - smart and sometimes naive personality to Canterlot High. Also, Rainbow Dash with her competitive and loyal nature is often a favorite. She can be involved in sports - related plots or stories about loyalty among friends.
One interesting plot could be the human adjusting to the magical world of Equestria. For example, learning to use magic or getting used to the different species and their cultures. Another idea is the ponies trying to understand human behavior and needs. They might be confused by things like human technology or the lack of a horn or wings.
A really interesting plot could be a pony from the other side who has unique powers that are considered dangerous in their own world. They flee to the normal pony world and have to hide their powers while also trying to find a place where they belong. This could involve a lot of character development as they interact with the normal ponies and learn about a different way of life.
Perhaps a story where Scootaloo and Rumble get into an argument over which pony tribe is better, the pegasi or the earth ponies. But then they are forced to work together when a strange magic starts affecting the ponies of their respective tribes. As they work together, they realize that each tribe has its own strengths and that they were wrong to argue in the first place.
One idea could be that Twilight Sparkle accidentally activates a time - travel spell and ends up in the past, right when Equestria was first being founded. She has to figure out how to get back while also making sure she doesn't change history too much.