Well, it could be that the special wand is made specifically to counter a new and powerful dark magic threat. The wand - maker might have foreseen this threat and created the wand for Harry. The wand could have some sort of connection to Harry's destiny, like it glows when he is near something crucial to defeating the dark force. Harry then has to figure out how to use this connection to his advantage in his battles against evil.
It could be an old and wise wizard who has been living in seclusion for years. He might be an expert in wand lore and has a special connection to the magical core materials used in wand - making.
The custom wand in the fanfic could lead to a whole new set of adventures for Harry. It could be made from a rare material that attracts the attention of dark wizards who want to steal it. This would put Harry in a dangerous situation where he has to protect his wand and himself. The wand might also have a mind of its own and guide Harry to places he never thought of going, like hidden chambers in Hogwarts or ancient magical sites outside of the school.
Well, he might discover new and unexpected magical abilities. A different wand could have different properties and react differently to spells. For example, if it was made of a more rare wood or had a different core, it could enhance certain types of magic that his original wand didn't. Maybe it would make his Transfiguration spells more powerful or his defensive spells more effective.
It could be Dumbledore. He always had a way of presenting Harry with things that would help him on his journey. Maybe Dumbledore had been holding onto this second wand for a special occasion or because he knew Harry would need it in the future.
In the 'Harry Gets a Second Wand Fanfiction', it might be that the second wand is a gift from an unexpected source. This could be a powerful magical being who sees great potential in Harry. With the second wand, Harry could have an advantage in battles against dark forces. He might be able to combine spells in unique ways that he couldn't before, since each wand has its own characteristics.
Well, if Harry gets a different wand in the fanfiction, it might change his relationship with other characters. For example, wizards might view him differently based on the new wand's appearance or reputation. Also, the new wand could have a different origin or history that gets intertwined with Harry's journey, opening up new storylines and adventures.
Well, he might discover new magical abilities. The custom wand could be made of unique materials, like a core from a rare magical creature. This could give him an edge in spells.
Perhaps it's a comical situation within the fanfic. Harry, being his curious self, accidentally licks Draco's wand while they are in a heated argument and it causes some sort of magical mayhem, like the wands start to emit strange lights and sounds.
There's a chance that the maker is a new character, an old hermit wizard who lives deep in the Forbidden Forest. He has been observing Harry from afar and realizes that the wands available in the regular market are not sufficient for him. So, he uses his knowledge of forgotten magics to craft a custom wand just for Harry.
Maybe it's an old wandmaker from a far - off land. This wandmaker has been crafting wands for centuries and has a unique intuition about which wands are meant for which wizards. He sees something special in Harry and presents him with a new wand.