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.
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 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.
Fanfiction.net is also a great place to find Bilbo and Smaug fanfiction. There are many different categories and ratings, so you can filter according to your preferences. However, be aware that the quality can vary widely. Some stories might be really well - written and engaging, while others might not be as good. It's all about exploring and finding the gems among the many stories available.
It depends on how one defines 'appropriate'. However, given that it involves the concept of 'abuse', it's probably not suitable for a general audience. Fanfic is often a way to explore different aspects of a character or story, but abuse is a serious and uncomfortable topic. If it's just using the term 'abuse' in a very mild or metaphorical sense, that might be different, but without more information, it seems inappropriate.
Frodo could be one. Since he was also closely associated with the ring in the original story, he might play a role in this fanfic, perhaps as a supporter or someone who has doubts about Bilbo's ability to destroy the ring.
Maybe Gandalf could help. He's wise and might have some knowledge about hair - cutting. Or perhaps one of the dwarves, like Thorin, who could offer some practical advice or even do the cutting for Bilbo.
There could be the company's CEO, who might be initially hesitant about adopting Bilbo but later sees his potential. Another character could be Bilbo's mentor in the company, someone who helps him understand how things work.
Yes, there might be such fanfics in the vast realm of fanfiction. However, the subject matter can be quite dark. Some fanfic platforms may have works exploring this idea, but it also depends on the rules of the specific platform regarding disturbing or violent content.