One possibility is that Harry finds Lily's trunk and it contains a family heirloom, like a magical locket or a special wand. This discovery could lead him on a new adventure. It might also have some protective spells on it that only Harry, as her son, can break. This could then be a key element in a plot against Voldemort, as the item in the trunk could hold some power that helps Harry in his fight.
In the 'Harry finds Lily's school trunk' fanfiction, it could be that Harry stumbles upon the trunk and inside he finds a diary. Through this diary, he gets to read about Lily's adventures at Hogwarts, her friendships, and her early encounters with Snape. This would be a great way to explore Lily's character more fully from Harry's perspective.
Sirius Black might be involved. As Harry's godfather and James' friend, he might have some knowledge about the trunk. He could help Harry understand the significance of the items in it. Also, Dumbledore could be involved. He always seemed to know a great deal about everything, and he might have some information about Lily's trunk that could help Harry on his journey of discovery.
Perhaps there could be her old Hogwarts textbooks. They might hold some special notes or spells that she had discovered during her time at school.
There could be her personal diaries. Maybe she wrote about her time at Hogwarts, her friendships, and her early days with James Potter.
Maybe it's filled with old family heirlooms like a dusty photo album with pictures of his ancestors he's never seen before, or some antique magic items that were long forgotten.
There could be some of his parents' old school things like their Hogwarts robes, wands (if they were allowed to keep them), and textbooks. Maybe there are also some love letters between his parents or photos of their time at Hogwarts.
Finding the trunk may also make Harry more determined. If there are any signs of her fight against the dark forces in the trunk, like a plan she was making or a charm she was developing, it could fuel Harry's own determination to defeat Voldemort and protect the wizarding world.
Well, in such a fanfiction, Harry Potter might use the genie's wishes to defeat Voldemort once and for all. Maybe he wishes for a super - powerful magical artifact that can nullify the Dark Lord's magic.
Well, in such a fanfiction, Harry Potter might discover a magical mask with special powers. It could be a mask that allows him to see through disguises, like those used by Death Eaters. Maybe it was left behind by an ancient wizard and holds the key to some long - forgotten mystery in the wizarding world.
In this fanfiction, Harry could potentially use the lightsaber to his advantage in battles against dark wizards. The lightsaber's unique cutting ability could be a great asset. He might also face challenges like having to keep it hidden from the Ministry of Magic which doesn't recognize non - magical weapons. And there could be a whole plot about where the lightsaber came from, like if it was brought to the wizarding world by a mysterious traveler from another dimension.
Well, it could be a total chaos. The Necronomicon is a book full of dark and dangerous knowledge. Harry, being the hero he is, might be tempted by the power it offers. But he would also be very cautious as he has fought against dark magic before. He might try to destroy it to prevent it from falling into the wrong hands in the fanfiction world.