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 helping magical animals solve their disputes. For example, he might mediate between a group of bowtruckles and a family of unicorns over territory. He could also use his ability to communicate with animals to gather information about dark wizards who are hiding in the Forbidden Forest, as the animals would be able to tell him if they've seen any suspicious activity.
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.
It could be a fanfiction where Harry is given a special charm or potion that enables him to talk to animals, and he embarks on a quest with their help to uncover hidden secrets in Hogwarts.
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.
He could have a potions - making adventure. Snape might teach Harry some advanced potions techniques that are not taught at Hogwarts. Or Harry could discover some of Snape's old potions experiments.
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.
He could go on adventures where he teams up with powerful animals. For instance, he might form an alliance with a giant eagle to explore uncharted areas from the sky.
He could have underwater adventures. The trident might give him the ability to communicate with sea creatures and explore the depths of the ocean. He could discover lost underwater cities or battle against sea monsters.
This ability could give Harry a unique edge in his adventures. It might help him solve mysteries or gain allies that others couldn't.
In fanfiction, Harry Potter going to France could lead to an adventure where he gets involved in a mystery related to a powerful French magical artifact. He'd have to team up with local wizards to solve it and in the process learn about the rich history of French magic.