The trunk could hold a diary or a journal written by either of his parents. In this diary, there could be details about their daily lives, their thoughts on the wizarding world situation at that time, and their hopes and dreams for the future, especially for Harry. There might also be some magic spells or charms that they had created or discovered, written down on some old parchment. And perhaps there are some small magical items that were given to them by their friends or relatives, things that have sentimental value.
Well, it might contain some family heirlooms. For example, a special piece of jewelry that has been passed down in the family for generations. There could also be some records of their magical research or experiments. Since his parents were smart and talented wizards, they might have been working on something interesting. It could also hold some mementos from their travels in the wizarding world, like souvenirs from different magical places.
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.
It might make him see them more as real people. Before, they were just an idea of parents, but the trunk could contain things that show their personalities, like their sense of humor or their interests.
Well, it could be some magical items like a self - cleaning quill. You know, for Harry to use in his studies at Hogwarts. It might also have a cloak that has some special property, perhaps one that can change colors according to Harry's mood.
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.
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.
Another possibility is that it just randomly appears one day. Magic in the Harry Potter world can be unpredictable. One morning, Harry wakes up and there it is at the foot of his bed. Or maybe a magical creature, like a house - elf that knew his mother, decides to bring the trunk to him. The house - elf could have been sworn to secrecy until the right moment when it senses that Harry is ready to discover his mother's secrets.
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.
It could be Hagrid. Hagrid is always looking out for Harry and giving him things. He might come across this special trunk during one of his travels in the Forbidden Forest or in some wizarding market and think it would be perfect for Harry.
In the learning trunk, there might be a magical map similar to the Marauder's Map but with more detailed information about the Hogwarts library. It could show hidden sections and the location of books related to specific spells or magical theories. There could also be a set of magical crystals that when held, can transport him into virtual scenarios to practice spells and combat skills in a safe environment.
There could be compartments filled with clothes that magically adjust to the wearer's size and the weather. One compartment might hold a set of invisibility cloaks, and another could have a collection of magical maps. Some compartments could be used to store portraits of important wizards and witches that can communicate and give advice.