One idea could be that Naruto and his friends end up in the My Little Pony world. Naruto's energy and determination might be a bit of a shock to the gentle ponies at first. He could learn about the magic of friendship in Equestria, which is quite different from the chakra-based power in his own world. Maybe he'd team up with Twilight Sparkle to fight some common threat that somehow affects both their worlds, like a dark force that wants to steal both chakra and pony magic.
One idea could be that the ponies discover Pokemon eggs in Equestria. They start to raise the Pokemon and learn about their powers. For example, Twilight Sparkle could study the different types of Pokemon moves using her magic knowledge.
One idea could be that Dipper and Mabel end up in Equestria. Dipper might be intrigued by the magic there and start studying it, while Mabel could make friends with the ponies easily. Maybe they help the ponies solve a mystery that's been plaguing Equestria, like strange disappearances. Another idea is that a pony from Equestria somehow travels to Gravity Falls. It could be Twilight Sparkle, who is amazed by the different kind of 'weirdness' in Gravity Falls compared to Equestria.
In a My Little Pony - Naruto fanfiction, the art of chakra in Naruto could be compared to the magic in My Little Pony. The ponies' unique abilities, like Fluttershy's connection with animals, could be related to the special skills of Naruto characters. For instance, Naruto's ability to befriend others could be seen as similar to how the ponies make friends. A fanfiction could explore how these similarities and differences play out when the two groups meet, perhaps with some comical misunderstandings at first due to their very different cultures.
Maybe some of the ponies from My Little Pony accidentally cross over to the Fairy Tail universe. They'd be amazed by the different types of magic there. The Fairy Tail guild members could help them understand this new world while also learning about the power of harmony from the ponies. For example, Twilight Sparkle could share her knowledge of magic with the Fairy Tail mages, and in return, they could teach her about their combat - oriented magic.
One idea could be that Danny Phantom accidentally gets sucked into the My Little Pony world. He could use his ghost powers to help the ponies solve a mystery that's been haunting their land, like strange disappearances that are actually caused by a mischievous ghost pony. Danny would have to adapt to the colorful and friendly world of ponies while also trying to find a way back home.
One idea could be a story where Sonic accidentally runs into the My Little Pony world. He could team up with Twilight Sparkle to stop an evil force that's threatening both their worlds. Maybe a chaos - causing villain has found a way to cross between the two realms.
One idea could be that the ponies from My Little Pony end up in the world of Skyrim. They could use their unique magical abilities to interact with the various races in Skyrim. For example, a unicorn pony might be able to use its magic to heal the wounded in Skyrim's battles, much like a Restoration spell in the game.
One idea could be a story where the prince has to go on a quest to save his kingdom from a dark magic that is slowly consuming it. He could meet the My Little Pony characters along the way and they help him with their unique abilities.
One idea could be that the ponies discover a portal to the Pokemon world and start to form teams with the Pokemon they meet. They could learn about Pokemon battles and use their own unique pony abilities in combination with the Pokemon's powers.
In 'My Little Pony Harem Fanfiction', an interesting idea could be the cultural exchange within the harem. Ponies from different parts of Equestria might have different traditions and values. When they form a harem, they get to share and learn from each other. This can lead to new ways of thinking and behaving for each pony, making the story rich and engaging.