In this fanfic, the knife could be a symbol of power or danger. If it has some dark magic associated with it, perhaps it was hidden away in Egypt for a reason. Bill and Charlie, being brave Weasleys, might get caught up in a struggle to either keep it out of the wrong hands or use it to defeat an evil force that has something to do with Egypt. It could also be a family heirloom that has a connection to their Egyptian heritage that they didn't know about until they delved deeper into their family's past.
The knife could be a part of an ancient ritual. The Weasley family, known for their interest in magic and history, might discover that the knife is needed for a long - forgotten Egyptian magic ritual. Maybe they need to use it to unlock a hidden chamber full of powerful magic items. Bill could be the one researching the ritual while Charlie is the one who actually has to perform it with the knife.
In a fanfic scenario, perhaps Bill and Charlie are on a mission in Egypt. The knife could be a magical or important artifact they are seeking. As for the honey, it could be part of a riddle or a key ingredient in a potion they need to make. Fanfic allows for these strange and wonderful combinations of elements.
In an Egypt - themed fanfic, Bill could be a pharaoh and Charlie his trusted advisor. The knife could be a ceremonial weapon used in rituals. The honey could be an offering to the gods. It's a simple yet interesting way to incorporate these elements into the fanfic.
The theme of self - discovery can also be found in many Bill and Charlie Weasley fanfics. As they go through different experiences, they learn more about themselves, their strengths and weaknesses. Additionally, magic and its exploration is a common theme. Given their magical abilities and interests, fanfics might have them discover new spells or magical artifacts during their adventures, which in turn helps them grow as wizards.
A really interesting fanfic is 'Charlie's Dragon and Bill's Curse'. In this story, Charlie's work with dragons intersects with a mysterious curse that Bill is dealing with. It's full of action and mystery. There's also 'Bill and Charlie: Hogwarts Years' which gives a new perspective on their time at Hogwarts, showing their growth and the pranks they played together.
Charlie is also great. His love for magical creatures makes for some really interesting plotlines. He could introduce a whole new world of creatures into the fanfiction that the others have to interact with.
One great 'Bill Weasley fanfic' is 'Bill's Adventure Beyond Hogwarts'. It really delves into his post - Hogwarts life and his work with Gringotts. The author does a wonderful job of portraying Bill's character, his loyalty to his family and his love for adventure.
One interesting fanfiction could be about their adventures together in the Forbidden Forest. Maybe they discover a hidden magical creature that no one has ever seen before. They would have to use their combined skills and knowledge to figure out how to deal with it.
One common theme is his love for dragons. Almost every Charlie Weasley fanfic will touch on his passion for these magical beasts, whether it's about his work at the dragon reserve or his personal quests related to dragons.