For a 'bilbo and smaug fanfic', here's an idea. Smaug has a weakness that only Bilbo can detect because of his hobbit senses. Bilbo has to figure out how to use this weakness without getting killed. Another idea is that Smaug has a dream about Bilbo before they meet, and this makes him curious when Bilbo actually arrives. So, instead of immediately attacking, he tries to figure out what this small creature is. Also, what if Bilbo was able to use some of the dragon's own magic against him? Maybe there's a spell in Smaug's lair that Bilbo can manipulate to his advantage.
One interesting Bilbo and Smaug fanfiction could be about a scenario where Bilbo manages to outwit Smaug not just with words but also by using some long - forgotten magic. Maybe he uses a spell that makes Smaug see illusions of vast treasures in other places, distracting the dragon from the Lonely Mountain for a while.
A group of dwarven scholars could be interesting side characters. They could be on a quest to learn more about dragon lore and end up in Smaug's lair at the same time as Bilbo. Or perhaps a wise old elf who has some knowledge of Smaug's past and can offer advice to Bilbo. Another option could be a small, sneaky goblin who is also after a piece of Smaug's treasure and causes some trouble for Bilbo and Smaug alike.
One idea could be that Smaug, instead of being in his usual dragon lair, somehow ends up in the Enchanted Forest of Snow White. Maybe he's been cursed and can't leave until he helps Snow White. He could use his fire - breathing ability to protect her from the Huntsman sent by the Evil Queen. This would create a really unique dynamic between the two different fantasy elements.
Another interesting plot is Bilbo getting stuck in a time loop during his adventures. He keeps repeating certain events but each time he tries different things to change the outcome. This could lead to some really unique and exciting story developments as he slowly figures out how to break the loop and continue his journey in a new way.
One idea could be that Bilbo's ring somehow ends up in the wizarding world of Harry Potter. Maybe it's discovered by a Hogwarts student on an archaeological dig during a school trip. Another could be that Bilbo is brought forward in time to Harry's era and he uses his hobbit stealth and Tookish curiosity to explore Hogwarts and help the trio in their fight against Voldemort. For example, his experience with Smaug could give him insights on how to deal with dangerous magical creatures.
Well, one possible plot point could be Bilbo's internal struggle. He might have moments of hesitation, thinking about the power the ring has given him in the past. Another could be the reaction of his friends and the surrounding world when he decides to destroy it. Maybe some would try to stop him, fearing the consequences.
One idea could be a story where they team up to solve a mystery in Middle - earth. Maybe there's a strange magic at work that's causing problems in the Shire and Thorin, with his experience, and Bilbo, with her quick thinking, have to figure it out.
It's quite unlikely. Fanfiction often takes creative liberties, but such a specific and unusual healing method seems far-fetched.
Bilbo could get hurt in a cave - in by a hidden trap. His companions would then need to figure out how to treat his wounds and get him out of the cave safely. This would create a lot of tension as they might not have all the necessary supplies with them.
Well, one idea could be that Bilbo's secret as a girl might lead to unique adventures. Maybe she has to hide her identity while on the journey, which could add a whole new layer of intrigue to the story. For example, she might have to pretend to be a male hobbit in situations where being female could be a disadvantage.