What are some interesting plot ideas for Phineas and Ferb male oc fanfiction?

The OC could be a time - traveler from the future. She comes back to the present to stop an event that will have a negative impact on the future. Phineas, being the curious and adventurous type, joins her on this mission. They use their combined creativity and Ferb's logical thinking to solve the mystery and prevent the disaster.

Another interesting OC could be a time - traveling character. This OC could accidentally land in the Phineas and Ferb's world while on a mission in time. Their presence could cause some chaos as they try to fix their time - traveling device, and Phineas and Ferb might end up helping them, leading to an adventure through different eras.

One idea could be Phineas and Ferb building a time - traveling roller coaster that takes them to different eras in their town's history. They could meet their ancestors and see how things were built and developed. Another plot could be that Doofenshmirtz creates an invention that accidentally swaps the personalities of all the characters. So Phineas becomes super - serious and Ferb becomes overly enthusiastic. It would be really funny to see how they deal with their new personalities while still trying to complete their daily big builds.

One idea could be to explore what happens when Phineas and Ferb build a time - traveling device. They could go back in time and meet their parents when they were kids. Another idea is a story where Perry the Platypus has to team up with Doofenshmirtz's daughter Vanessa to save the day. Maybe they discover a new villain who is more powerful than Doofenshmirtz and they have to put aside their differences to stop this new threat.

A really cool plot could be that Ferb discovers he has some latent Force - like abilities. Phineas then decides to build a device to enhance these abilities. Meanwhile, in the Star Wars universe, there's a new threat emerging that only their combined skills and knowledge can defeat. They have to travel across different planets, meet various characters, and use their unique brand of problem - solving. Along the way, they introduce some of their friends from their own world to the Star Wars characters, creating some really interesting cultural exchanges and comical situations.

One idea could be that Phineas and Ferb build a super - advanced lightsaber - making machine. They use their usual creativity and some 'Doo - hickey' they invented to create lightsabers with unique features like changing colors on command or having the ability to transform into other tools. Ferb could be the one who focuses on the technical aspects while Phineas comes up with the wild designs.

Maybe the little sister gets lost in the backyard which has been magically transformed by one of their inventions into a huge, mysterious maze. Phineas and Ferb then have to use their wits and knowledge of the backyard to find her. It could show their protective side towards their little sister.

One idea could be a crossover with 'Kim Possible'. Phineas and Ferb could use their inventive skills to help Kim in one of her missions against Dr. Drakken. Maybe they create some high - tech gadgets for her. Another idea is a crossover with 'The Simpsons'. The boys could visit Springfield and get involved in some wacky adventures with Homer and Bart. They might even build an amazing contraption in the Simpsons' backyard.

One idea could be that Phineas and Ferb build a lemon - themed amusement park in their backyard. It could have rides made out of giant lemons, and lemonade stands everywhere. Another could be that they use lemons to power a new invention that can travel through time. And a third idea might be that they discover a lemon - based alien species and have to communicate with them using lemon - scented signals.

Perhaps Candace becomes a vampire accidentally while trying to stop one of Phineas and Ferb's experiments that goes awry. As a vampire, she has to struggle with her new cravings while still trying to be a normal teen. She might start seeing Phineas and Ferb's projects as a way to distract herself from the urge to drink blood. And the boys might have to figure out how to turn her back before their parents find out.