The dwarves who had the adventures with him might also enjoy listening. It would be a way to relive their shared experiences and remember the comradeship they had. They might sit around a fire and listen as Bilbo recounts their journey to the Lonely Mountain.
He might also tell stories about the different creatures he met during his travels. Such as the elves in Rivendell. He could talk about their grace, wisdom, and the hospitality they showed to him and his companions.
One story could be that in a parallel Middle - earth, Bilbo was secretly female but disguised as male for the sake of adventure. She had to overcome the same challenges as the male Bilbo in the original story, like facing the dragon Smaug, but with the added layer of hiding her true gender from her companions.
One interesting story could be where Bilbo, with his Tookish side fully embraced, befriends a dragon in a more comical way. Maybe they have a series of misadventures together, like trying to find the best treasure hoard in Middle - earth. Another could be a more serious take where Bilbo has to use his wits to outsmart a dragon that has some sort of magical power over the Shire. And there might be a fanfiction where Bilbo and the dragon form an unlikely alliance against a common enemy, such as an ancient evil that threatens both their kinds.
One popular 'bilbo baggins cat fanfic' might be the one where Bilbo discovers a magical cat in Middle - earth. The cat has the ability to communicate with him and they go on adventures together, exploring hidden caves and encountering strange creatures.
There are fanfictions where a female Bilbo is depicted as a more diplomatic figure. In these stories, her femininity is used to her advantage in the world of Middle - earth. For instance, she could use her charm and intuition to smooth over difficult situations with the dwarves or other creatures. Some fanfictions also explore how a female Bilbo would be received in the male - dominated society of Middle - earth and how she would break gender norms.
One idea could be that Female Bilbo Baggins joins a traveling caravan by accident. Maybe she was exploring the Shire and got separated from her group, and the caravan took her in. She could then use her wits and hobbit charm to make friends within the caravan, and they could have all sorts of adventures together, like facing off against bandits or discovering a hidden magical place.
A major theme in these fanfictions is the relationship changes. His friends, like the dwarves or Gandalf, might react differently to him as a vampire. Also, the theme of temptation is present. The urge to drink blood and how Bilbo resists or succumbs to it is often explored in detail. For example, in some stories, he has to find alternative ways to satisfy his vampiric thirst without harming the innocent. This adds a layer of complexity to his character and the story as a whole.
One possible theme could be a sense of betrayal. For example, if Bilbo feels betrayed by his companions during the adventure, it could lead to his anger. This could be related to issues like sharing of the treasure or decisions made during their journey.