Perhaps a story where Bandana Waddle Dee gets separated from Kirby during a big battle. Bandana Waddle Dee has to find his own strength and courage to survive and then reunite with Kirby. He might make new friends during his solo adventure who help him in unexpected ways.
A plot could involve Bandana Waddle Dee and Kirby accidentally swapping abilities. This leads to a lot of comical situations as they try to figure out how to use their new powers effectively. They also have to deal with a villain who is taking advantage of the chaos.
Their friendship can be explored by showing how they support each other in tough times. For example, when Kirby is feeling down, Bandana Waddle Dee can cheer him up with his loyalty and positive attitude.
Some fanfictions could be about their friendship. Maybe a story where Kirby gets lost and Bandana Dee goes on a journey to find him. Along the way, Bandana Dee has to face his own fears and insecurities, and when he finally finds Kirby, their bond becomes even stronger.
Fanfiction.net is also a popular option. It has been around for a long time and has a wide range of fan - created content, including stories about Kirby and Bandana Dee. Just use the search function to look for what you want.
One idea could be Kirby arriving in Remnant and being mistaken for a new type of Grimm at first. Then, as the characters get to know Kirby, they realize his unique abilities can be a great asset in battles against Salem's forces.
One plot idea could be human Kirby in a high school setting, dealing with normal teenage problems while also having his Kirby - like powers. For example, trying to hide his ability to inhale large objects from his classmates.
Perhaps a plot where they meet in a dream world and have to find their way back to reality. In this world, they discover new powers within themselves while also forging a stronger friendship. They could encounter strange creatures and solve puzzles to make their way back.
One idea could be that Kirby accidentally gets sucked into the Pokémon world through a strange portal. He then teams up with Pikachu to find a way back home while also helping Pokémon in need. For example, Kirby could use his inhaling ability to save some Pokémon from a forest fire by sucking up the flames.
One idea could be Kirby exploring a new planet where Star Dream has malfunctioned and is causing chaos. Kirby has to find a way to fix it without getting caught by its security systems.
A more complex plot might be that there's a strange rift between the Kirby and Pokemon universes that's causing chaos in both worlds. Kirby and a team of powerful Pokemon, such as Mewtwo and Lugia, must work together to close the rift. Along the way, they learn about each other's powers and abilities, and Kirby has to adapt to the Pokemon battle system while the Pokemon are amazed by Kirby's ability to copy their moves.
A Kirby and Sonic the Hedgehog crossover fanfiction would also be cool. Imagine Kirby in the fast - paced world of Sonic. Kirby could learn to run super fast by swallowing a power - up in Sonic's world. They would have to race against time to stop Dr. Eggman from using Kirby's power - stealing abilities to take over both their worlds.