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.
There are fanfictions that explore a different kind of relationship between Bilbo and Smaug. For instance, some stories might depict Smaug having a begrudging respect for Bilbo's courage. In these tales, Smaug doesn't immediately try to kill Bilbo when they first meet in the lair but instead engages in a more complex conversation about the nature of greed, both of the dwarves and of himself as a dragon hoarding gold.
Another great fanfiction idea could be a post - Smaug - death story where Bilbo discovers that Smaug had a hidden lair that no one knew about. In this lair, there are ancient dragon artifacts that hold the secrets of an even older civilization. Bilbo, with his adventurous spirit, decides to explore this lair and uncovers things that change his perspective on the history of Middle - earth and the role of dragons in it.
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.
It's quite unlikely. Fanfiction often takes creative liberties, but such a specific and unusual healing method seems far-fetched.
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 interesting SMAUG 'Game of Thrones' fanfiction could be one where Smaug somehow ends up in Westeros. He might be drawn by the rumors of the vast treasures held by the various lords. Another could be a story where he forms an alliance with one of the powerful houses, like the Lannisters, who are known for their love of gold.
Some 'The Hobbit: Baby Bilbo' fanfiction might explore the idea of Bilbo being a special baby among the hobbits. For instance, he could have shown extraordinary intelligence or a strange connection to nature even as a baby. In some fanfictions, it could be about how the discovery of his Tookish side started when he was just a baby. Maybe he was more curious than other baby hobbits and always getting into little 'adventures' around the Shire, like exploring the woods near his home more often than normal.
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.
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 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.
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.
There might be a fan fiction where Smaug forms an alliance with a powerful house in 'Game of Thrones'. For example, he teams up with House Lannister. The Lannisters could use Smaug's power to defeat their enemies, while Smaug gets a share of the wealth and territory. This would create a whole new dynamic in the power struggle of Westeros.