Archive of Our Own (AO3) is a great place to find Stephen Strange fanfics. It has a wide variety of works, from different genres and with different interpretations of the character. The tagging system on AO3 makes it easy to find exactly what you're looking for, whether it's a specific type of story or a particular relationship you want to read about.
Strange could develop his patience. Dealing with an exhaust fan - related magical situation would require him to be calm and observant. For instance, if the fan is creating erratic magical energy bursts, he can't just lash out. He has to study it, which helps him become more patient in his approach to solving problems.
I really like 'Strange Encounters'. It delves into an alternate universe where Stephen Strange has to face a different set of challenges. The author does an amazing job of creating a new and exciting world for Strange to navigate, and the way they write his character is very true to the original while also adding new dimensions.
One popular trope is the 'enemies to lovers' trope. Given their different personalities and initial interactions in the MCU, it's interesting to see how they might overcome their differences and fall in love in fanfic. Another is the 'hurt/comfort' trope. Maybe Tony gets injured during a battle and Stephen has to use his magic to heal him, leading to a deeper connection.
One interesting Stephen Strange fanfic could be those that explore his early days of learning magic at Kamar - Taj. They might show his struggles with the complex spells and his interactions with the other sorcerers. For example, a fanfic could focus on his friendship with Wong and how they overcame challenges together in the mystic arts.
Another option is to join Marvel - related fan communities on platforms like Reddit. There are subreddits where fans discuss and share fanfics. You can ask for 'tony stark x stephen strange' fanfic recommendations, and the community members are usually quite helpful in pointing you towards some great stories.
The arc reactor in fanfiction involving Stephen Strange can also be a source of conflict. Some might write that the energy from the arc reactor is disrupting the magical balance that Strange is trying to maintain. This could lead to a tense relationship between the two characters at first, but as the story progresses, they could find a way to work together to either control or utilize the arc reactor's power in harmony with magic.
There's also a fanfic called 'Love in the Mystic Arts'. This one combines the magical world of Doctor Strange with the relationship between Stephen and Christine. It has some really interesting plot twists where Christine gets involved in the magical realm more than she expected, which adds a whole new layer to their relationship.