Since it's a very specific type of fanfiction, the common themes could also revolve around the uniqueness of the Draco as a pet. Maybe the stories explore how the Draco's natural characteristics interact with the LED element. It could also have themes of discovery, as the owner discovers new things about their LED Draco pet.
Transformation is also quite common. It could be Draco being physically or metaphorically transformed into a 'pet - like' state. And this transformation usually leads to different relationships and situations in the story. Another theme could be redemption. Maybe through his experience as a 'pet', Draco has a chance to redeem himself in some way. There are also often themes of loyalty and trust, as the relationship between the characters is redefined in the context of the 'pet' concept.
A common theme is power and control. Harry being in the position of master over Draco brings up questions about who really has power in their relationship. Is it Harry because of his new role, or does Draco still hold some power through his Slytherin cunning? Another theme is redemption. Draco, in the role of a pet, has a chance to redeem himself from his past actions as a bully.
To find 'LED Draco pet' fanfiction, you can also reach out to other fans who are into similar unusual concepts. Social media platforms like Twitter or Tumblr might be good places to start. Use relevant hashtags and ask if anyone has come across or written such fanfiction.
One common theme is redemption. Draco, who was often seen as a bit of a villain in the original series, gets a chance to redeem himself through his role as an adoptive parent. Another theme is family. It shows how Draco creates a new family unit through adoption.
Another theme is his struggle with the moral gray areas he often finds himself in. He might be scared of the consequences of his actions, like in fanfictions where he's involved with the Death Eaters. He realizes the wrongness but is too scared to break free at first.
Power struggles are often a theme. In prison, there are different factions and Draco may get caught up in them. Also, self - reflection is common. Being in prison gives Draco time to think about his life, his family, and his values. For example, in many fanfictions, he realizes the error of his ways in the wizarding world before prison and starts to change his attitude. It's a complex exploration of his character.
A prevalent theme is the exploration of gender norms. In 'effeminate Draco' fanfiction, it often challenges the traditional masculine image associated with Draco. There's also the theme of acceptance. How the other characters in the Harry Potter universe accept or reject Draco's new effeminate identity can be a major part of the story. Additionally, there can be themes related to love and attraction. Draco's effeminate side might attract different types of people or change the nature of his existing relationships.
Often, there's a theme of self - discovery. Draco realizes new things about himself as he takes on the housewife role. He might find that he enjoys the simple pleasures of taking care of a home more than he thought. He also might learn about patience and the value of small, daily tasks that he previously overlooked in his more 'glamorous' wizarding life.
One common theme is isolation. Since Draco is deaf, he often feels isolated from the other students in Hogwarts. This theme of being alone and trying to break free from that solitude is often explored.
One common theme is the exploration of dark magic. Since Bellatrix is a known dark witch and Draco was on the verge of fully embracing the dark side, fanfictions often look into how dark magic affects their relationship and individual characters. For example, in some stories, Draco might be tempted by the same kind of magic Bellatrix uses.