Can you recommend some good Captain Marvel x Reader fanfic?

Sure. You can start by checking out Archive of Our Own (AO3). It has a vast collection of fanfics on various pairings, including Captain Marvel and Valkyrie. Just search for the tags related to them and you'll find a bunch of great stories.

Sure. 'A Captain Marvel's New Adventure' is a great one. It takes Carol Danvers on an unexpected journey through a new galaxy where she has to face a powerful and mysterious enemy. The story is full of action and also shows a different side of her character.

One common theme is adventure. Since Captain Marvel is often involved in intergalactic and high - stakes adventures, the reader character usually gets dragged into these as well, creating an exciting story.

There's also 'A Meeting of Heroes'. This fanfic focuses on their first encounter. It delves into how they initially view each other and then gradually come to respect and trust one another. It has some really interesting dialogue exchanges that bring out the best in both characters.

There's also 'Talos and the Skrull Resistance'. This fanfic focuses on Talos' leadership role within the Skrull resistance. It shows his strategic mind and how he uses his skills to protect his fellow Skrulls while also trying to find a new home for them. It has some really exciting action scenes.

There's a fanfic titled 'The Meeting of Naruto and Captain Marvel'. In this one, Naruto is transported to the Marvel universe where he meets Captain Marvel. They team up to fight a common enemy that is threatening both the ninja world and the Marvel world. It's full of action-packed scenes and interesting character interactions.

There's also a really interesting 'Marvel x Reader' story where the reader is a scientist who gets involved with Doctor Strange. In this story, the reader helps Strange with some magical experiments in his Sanctum Sanctorum. It dives deep into the world of magic in the Marvel universe and how an ordinary person can contribute. It's a very imaginative story.

There's also 'Heroic Alliance'. In this fanfiction, Spiderman and Captain Marvel start off with a bit of a misunderstanding but quickly realize they need to work together. It delves into their individual insecurities as heroes. For example, Spiderman is worried about being in over his head in a cosmic - level threat, and Captain Marvel has her own doubts about her leadership. The story builds on their relationship as they overcome these issues.

There could be a fanfic where Captain Marvel is training new recruits. One of the recruits, in a moment of clumsiness, ends up tickling her, which then leads to a story of how she uses this unexpected situation to teach them about adaptability and having a sense of humor in tough situations. It would be a great way to show her leadership skills while also having a light - hearted plot.

One popular Captain Marvel body swap fanfic is 'Swapped Perspectives' which explores how Carol Danvers adjusts to being in a different body while still having her powers. It has an interesting take on how she would interact with her friends and enemies in this new form.