Are there any interesting plot ideas for an MLP and Coco fanfic involving a pommel?

There might not be a huge amount of such fanfics readily available. However, you could check fan communities and forums dedicated to MLP and Coco. Sometimes fans discuss and even share their own unpublished fanfic ideas or works related to rather specific topics like this. It's also possible that a pommel could be used symbolically in a story, perhaps as an important object in an adventure in an MLP - Coco crossover fanfic.

The fanfic could tell the story of how Nova Star and Sparkle first met. It could be a chance encounter in a magical forest where they both were drawn to a mysterious, glowing object. Their initial mistrust turns into friendship as they figure out the purpose of the object together.

One idea could be a Beezen character in the MLP world having to adapt to the magic there. Maybe they start off as an outsider and gradually learn to use the magic for good, like helping ponies build better hives or something.

One idea could be a wedding between two ponies from different tribes, like a Pegasus and an Earth pony. They would have to overcome the differences in their cultures and traditions. For example, the Pegasus might have a flying ceremony while the Earth pony has a more grounded celebration. Another plot could involve a wedding planner pony trying to create the perfect wedding but facing all sorts of comical disasters along the way, like the flowers not arriving or the cake getting ruined.

One idea could be to create a fanfic where Coco Bandicoot discovers a hidden, ancient power within the jungle. She then has to learn how to control it to save her friends from a new, powerful villain.

A simple yet interesting plot could be that Spike eats something he shouldn't have and gets sick. For example, he might have eaten a magical plant that gives dragons a stomachache. His friends then have to figure out how to make him better. Rainbow Dash could fly around to find an antidote, while Rarity could sew him a warm blanket to keep him comfortable.

One idea could be an alternate universe where the ponies have different elemental powers. For example, instead of Twilight Sparkle being a unicorn with magic related to friendship, she could control time. This would change the entire dynamic of the stories and the relationships between the ponies.

One idea could be that all the ponies from different tribes come together to face a final, great evil that threatens Equestria. They combine their unique magic and skills to defeat it and in the process, they create a new era of harmony where all differences are truly celebrated.

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 the ponies from different pony tribes are forced into the Hunger Games arena. For example, the earth ponies might use their strength and connection to the land to find food and build shelters. The pegasi could use their flying abilities to gain a strategic advantage in the arena, like scouting from above. And the unicorns could use their magic for various things like defense or creating illusions to mislead opponents.