Obviously Drake and Josh themselves are essential. But also Megan can add a lot of fun and mischief to the story. Their parents can be included to create some family - dynamic situations. And then there are their friends like Crazy Steve. He can bring in some really wacky elements.
A great Drake and Josh fanfic idea might be them going on a road trip that turns into a wild adventure. Along the way, they meet all sorts of interesting characters, have car troubles, and get into some sticky situations. Maybe they also discover a hidden talent they didn't know they had during this trip.
Megan could be a great addition. Her mischievous nature could add a lot of drama and humor to the story. Another good character would be Walter, their dad. He could provide some fatherly advice or get involved in one of their wacky adventures. Also, Crazy Steve from another Nickelodeon show could make an interesting cameo. He could bring his own brand of crazy into the drake and josh world.
A popular theme could also be the secrecy and the thrill of a hidden relationship. Since they are best friends in the original show, in the fanfic, they might keep their romantic relationship a secret from their friends and family at first. This can lead to some tense and exciting moments as they try to balance their normal lives with their new - found love.
She might face body image issues. Since she's used to her male body, adjusting to a female body in terms of how society views it could be tough. For example, there could be pressure to conform to certain beauty standards.
One common theme could be friendship. For example, when Drake gets hurt, Josh might be there to support him, showing the strong bond between them. Another theme could be learning a lesson. Drake's injury might lead him to realize he should be more careful or that he should value his relationships more.
Another theme is growing up. Drake and Josh are in their teen years, and Megan is younger. Fanfictions might show how they all face different challenges as they get older, whether it's dealing with school, friendships, or first crushes.
One interesting fanfiction could be about Drake and Josh trying to include Megan in their music-making adventures. Maybe Megan has a hidden talent for writing lyrics, and at first, Drake and Josh are skeptical but then they realize how amazing her ideas are.
One popular storyline is when they try to prank each other but the pranks backfire. For instance, Drake tries to make Josh think he won a million dollars but it turns out to be a fake lottery ticket. Another is when they have to take care of a pet together and they have different ideas on how to do it.