A very popular one is 'Bilbo's Unforeseen Ally'. The OC in this story is an elf - maiden who has been exiled from her own realm. She teams up with Bilbo and they face many challenges together. The author does a great job of showing how Bilbo's hobbit - sensibilities and the elf - maiden's grace and skill complement each other in their adventures.
There's also a fanfic called 'Bilbo's Youthful Escapades'. In this story, it focuses on Bilbo's friendships during his younger years and how they shaped the hobbit he would become later. It's full of heartwarming moments and a bit of adventure as well. It really delves into the idea of what made Bilbo so curious and brave from a young age.
I've also heard of 'Bilboa: The Female Hobbit'. This fanfiction not only changes Bilbo's gender but also delves deeper into the hobbit culture from a female perspective. It explores how a female Bilbo might interact with the male - dominated hobbit society, all while going through the main events of the original story with a fresh take.
There are many out there. Some explore Bilbo's pain during his time in the Lonely Mountain, like 'Bilbo's Trials at Erebor'. It shows how the dragon's presence and the battles affected him deeply. These fanfictions often take the original character traits of Bilbo and expand on the idea of his hurt in different situations.
There is a fanfiction called 'Bilbo the Blood - Drinker'. In this story, Bilbo becomes a vampire during his adventures. It explores how his relationships change, especially with the dwarves. They are initially afraid but then come to accept him as he uses his vampire powers to their advantage during their quests.
Self - discovery is also a theme. Just as Bilbo discovers his own courage and capabilities during his adventures, the OC may also be on a journey of self - discovery. They could be learning about their own powers, their place in the world, or their true identities, all while being influenced by their interactions with Bilbo.
One great 'bamf Bilbo Baggins fanfic' is 'The Adventures of BAMF Bilbo'. It really shows Bilbo in a new light, with him being much more assertive and powerful than in the original story. Another one could be 'Bilbo's Hidden Strength' which delves into how Bilbo could have been a real force to be reckoned with in different situations.
One great 'female Bilbo Baggins fanfic' could be 'The Adventures of Female Bilbo'. It often portrays her in a new light, taking on quests with a different perspective. Another is 'Bilboa: The Female Version' which might show how she could have changed the dynamics of the original story.
There are often fanfiction pieces that explore the relationship between Bilbo and the reader in a romantic way. For example, a story could start with the reader being a new arrival in the Shire and gradually falling in love with Bilbo as they get to know his kind and curious nature. You can search for these by using specific tags like 'Bilbo Baggins x Reader' and 'Romance' on fanfiction websites.
Finding a specific 'bilbo baggins flinching' fanfic can be a bit tricky. Fanfic writers often explore different aspects of characters. Maybe check out some Lord of the Rings fanfic communities on social media platforms. There, fans might be able to point you in the right direction towards fanfics with this particular theme.
I'm not sure of a specific 'angry bilbo baggins fanfic' off the top of my head. But you can try looking on fanfic websites like Archive of Our Own. There might be some stories there that explore an angry Bilbo Baggins in various scenarios, such as during his adventures when he's faced with difficult challenges or when he has disputes with other characters in Middle - earth.