Imagine if the Star Wars droids end up in Equestria. C - 3PO is constantly confused by the pony society and R2 - D2 tries to communicate with the ponies' technology. Meanwhile, the ponies are intrigued by these strange metal creatures. Then, they learn about the greater war in the Star Wars universe through the droids and decide to help the Rebellion, using their unique pony skills like Fluttershy's ability to befriend animals to gain allies in the Star Wars galaxy.
One idea could be Luke Skywalker somehow gets transported to the My Little Pony universe. Maybe he has to use his Jedi skills to protect the ponies from a new threat that has emerged, like a dark magic that is similar to the dark side of the Force. He could teach the ponies about self - defense and the importance of inner strength.
Twilight Sparkle and Yoda would be an interesting pairing. Twilight is very studious and knowledgeable, and Yoda is a wise Jedi Master. They could exchange knowledge about magic and the Force. Another good pairing could be Rainbow Dash and Han Solo. Rainbow Dash is brave and adventurous, similar to Han Solo's roguish nature.
One possible plot could be that the Tenno from Warframe are somehow transported to the Star Wars universe. They could team up with the Jedi to fight against the Sith and the Grineer, who have also found their way into this new universe. The Tenno's unique abilities, like their Warframe powers and weaponry, would be a great addition to the Star Wars battles.
Well, perhaps the Star Wars droids end up in Equestria. C - 3PO is constantly freaking out about the strange new world, while R2 - D2 just beeps and tries to figure things out. Meanwhile, the ponies are curious about these strange metal creatures. The ponies and the droids then have to work together to find a way to get the droids back to their universe. Maybe Twilight Sparkle uses her magic to open a portal, but they have to deal with some villains from both universes who don't want them to succeed.
One idea could be that the Jedi or Sith from Star Wars somehow end up in the RWBY universe. Maybe a Sith Lord is after the Dust in RWBY for its power - similar to how they seek the Force in Star Wars. The Jedi could then come to stop the Sith and end up allying with the RWBY characters.
One possible plot could be that Sora and his friends find themselves in the Star Wars universe. They team up with Luke Skywalker to fight against the Heartless that have somehow invaded the galaxy. Sora's Keyblade could be a unique weapon in this new setting, and they could learn about the Force while sharing their own knowledge of the Heart.
Maybe there could be a Creepypasta entity that invades Equestria. Let's say a well - known Creepypasta character like Slenderman appears in Ponyville. The ponies are initially confused and then terrified as they start to notice strange things happening. The MLP characters then have to figure out how to get rid of this intruder and restore peace to their land. It could be a story about how the kindness and friendship of the ponies are put to the test against the malevolence of Creepypasta.
One interesting aspect might be the character interactions. Picture Captain Kirk trying to charm the ponies or Spock having deep philosophical discussions with Twilight Sparkle about the nature of existence. The different cultures in Star Trek, such as the Klingon warrior culture, could also contrast with the peaceful pony society. This could lead to some really unique storylines where the ponies have to deal with more aggressive or complex beings, and the Star Trek characters have to adapt to the more harmonious and magical environment of Equestria.
One idea could be that the ponies from MLP accidentally enter the Pokemon world through a magical portal. They team up with some Pokemon trainers to stop an evil team that's trying to use both pony magic and Pokemon power for their own bad deeds. Another plot could be a Pokemon tournament where ponies are allowed to participate using their unique abilities as if they were Pokemon. For example, a Pegasus pony could use its flying skills in a battle like a Flying - type Pokemon.
One idea could be that Discord causes chaos in Equestria that the MLP characters have to solve in a really wacky way. For example, he might turn all the clouds into cotton candy and the ponies have to figure out how to make it rain again without making a huge mess. Another plot could involve Discord getting his powers mixed up with a unicorn's magic and they have to work together to undo it. Maybe he accidentally gives Twilight Sparkle the power to turn things into random objects every time she tries to use her normal spells.