Perhaps Harry Potter and the dinosaurs embark on a journey to find a lost magical artifact that has the power to restore balance in the wizarding world. The dinosaurs might know where the artifact is hidden because they have a connection to the ancient times when the artifact was last seen. Along the way, they face various challenges like dangerous terrains, other hostile magical creatures, and traps set by dark forces. Harry has to use his magic skills and his ability to talk to dinosaurs to overcome these obstacles.
Maybe he uses magic spells to bridge the communication gap. For example, a spell that can translate his thoughts into the language dinosaurs can understand, or vice versa.
Perhaps he uses the island as a secret training ground. He could practice advanced spells away from the prying eyes of Hogwarts faculty and students. Harry might also build his own magical fortress on the island for protection and privacy.
He might encounter magical ravens that can perform spells. These ravens could be guardians of certain magical places or objects. For example, there could be ravens protecting the entrance to a hidden chamber in Hogwarts.
He could have all sorts of wild adventures! Maybe he'd befriend some magical creatures and help them solve problems.
He could have adventures like using the dogs to track down dark wizards. Since dogs have a great sense of smell, they could lead Harry to places where dark wizards are hiding. For example, they might sniff out a hidden lair in the Forbidden Forest where a group of Death Eaters are planning something evil.
In this fanfiction, Harry could have an adventure of uncovering the true power of Potter Manor. The manor may have been built on a powerful magical ley line, and as Harry explores, he discovers that the manor has the ability to amplify his magic. However, there are also dark forces that want to take over the manor for its power. Harry has to battle these forces while also learning how to harness the manor's power for good. He might also discover a hidden room with a prophecy about his future and the future of the wizarding world, which would set him on a whole new adventure to fulfill or change that prophecy.
They could have an adventure where they help Camelot defend against a dark sorcerer. Harry's combat magic from Hogwarts would be useful, and Merlin's knowledge of Camelot's magic and its secrets would be crucial. Another adventure might be to find a lost magical artifact that is important for both Camelot and the wizarding world. Along the way, they might encounter magical creatures unique to Camelot that Harry has never seen before, like the Questing Beast.
He could have adventures like exploring uncharted magical islands. Maybe he'd encounter new magical creatures and have to use his wizarding skills to either befriend or fend them off. For example, he might come across a group of mermaids who guard a powerful magical artifact on an island.
Well, they could have all sorts of adventures. Maybe the baby cousin has some sort of special magic that Harry doesn't know about yet. For example, the baby cousin could be able to communicate with magical creatures in a unique way. And Harry, being the curious and brave wizard he is, would want to explore this new aspect of magic with his little cousin. They might go on a journey to find a rare magical creature that only the baby cousin can sense.
Lupin could be a likely candidate. Given his experience and his role as a sort of mentor figure to Harry, he could give Harry the talk. It might involve Lupin sharing his own experiences with being a werewolf and how to deal with secrets and prejudices in the wizarding world.