He might choose holly. In the original series, Harry's wand has a holly wood. Since he's making his own in this fanfiction, he could still be drawn to it for its traditional associations with protection and courage.
Another option could be willow. Willow is known for its flexibility and adaptability. Given Harry's experiences of having to adapt to many difficult situations throughout his life, he might select willow as it could represent his ability to bend without breaking and his empathetic nature, as willow is also associated with intuition and emotional understanding.
He might choose a phoenix feather because it represents rebirth and magic. And for the wood, perhaps he'd pick holly, which is often associated with protection in the wizarding world.
In fanfiction, his wand could potentially be used to reveal secrets. Snape was full of secrets himself. Maybe his wand could be a key to unlocking hidden chambers or revealing long - lost knowledge. It could be used to decrypt old spells or manuscripts that were crucial to the wizarding world's history.
He might have lost his main means of casting spells. This would put him at a great disadvantage in any magical battles or challenges. Without his wand, he would have to rely on other forms of magic or his natural abilities, which could be much more difficult.
Perhaps it was related to some new and untamed magical ability within Harry. For example, if he discovered a hidden power within himself that was too much for his wand to handle. His wand, which was made for normal magical use, couldn't withstand the intensity of this new power, and thus shattered.
In the fanfiction, Harry with his custom wand could have adventures in the world of magical creatures. He could communicate with creatures that were previously unapproachable, like the giant serpents in the Forbidden Forest. His custom wand might have a special ability to understand and interact with these creatures on a deeper level. He could also use it to protect these creatures from those who would harm them, leading to a series of exciting and dangerous encounters.
Well, he starts by going into the Forbidden Forest. There, he communes with the trees, seeking one that calls out to him. Once he finds the perfect tree, he uses his magic to gently remove a branch. He then spends time carving and molding the wood, all the while focusing his magic into it. For the core, he might go on a quest to find a special magical creature from which to obtain a suitable element. After getting the core, he combines it with the wood in a ritualistic way, using his most powerful spells to bind them together.
He might face backlash from his own side. His family or the other Death Eaters, if it's set in that kind of context, could view his act as betrayal. They would likely be angry with him and might try to punish him in some way.
One scenario could be Snape using his wand to communicate with the dead. Maybe he discovers a spell that allows him to use his wand as a conduit to speak to Lily Potter. This would add a whole new layer to his character, as his love for Lily was a major driving force in his life.
If Harry Potter snapped his wand in fanfiction, it would be a huge turning point. Maybe he'd start a journey to repair it, like finding some ancient magic or a powerful wizard who could fix it. Or he could discover latent powers within himself that didn't rely on the wand. It would be a great opportunity for the writer to explore different aspects of Harry's character and the magic world without the typical wand - based magic.
He could collaborate with Ollivander. Ollivander is the expert in wands, and he has a vast knowledge of wand - making materials and techniques. Working together, they could combine their knowledge to create something truly extraordinary.