It could be self - expanding. So when Harry enters, it can adjust its size according to the number of people or the amount of stuff he has with him. For example, if he has a lot of friends joining him, it can become as large as a small mansion inside.
Perhaps he buys it from a traveling wizard merchant. These merchants sometimes have rare and special items that are not easily found in regular stores. They could cross paths with Harry during one of his adventures outside of Hogwarts.
One idea could be that the magical tent becomes a portal to different magical realms. For example, it could lead to a hidden dimension full of ancient spells and forgotten magic. Another could be that the tent has a mind of its own and helps the characters in unexpected ways during a dangerous adventure, like providing magical defenses when they are under attack.
Sometimes, new original characters are created in the fanfiction. These could be young wizards or witches who discover the magical tent and embark on their own journey. They might interact with the well - known characters from the original series, like getting help from Dumbledore or facing challenges set by Voldemort.
His best friends, Ron and Hermione, would most likely visit him. They have always been by his side through thick and thin, so they would find a way to get to the tent to check on him, bring him supplies, and offer their support.
One possible storyline could be that Harry is on the run from dark forces again and the tent serves as his only safe haven. He might be using magic to conceal the tent and make it a cozy, self - sufficient living space, with magical wards all around it for protection.
They could also have a connection to his emotions. In fanfiction, perhaps when Harry is feeling angry, the tattoos might darken or become more prominent. When he is happy, they could shine brightly. This connection between his emotions and the tattoos could be a way for him to better understand himself and also for others around him to gauge his mood without him having to say a word. And the tattoos could potentially attract certain magical energies based on his emotional state, further affecting his magic.
In fanfiction, the glasses in the tent might be a key to a mystery. They could be the only clue to finding a hidden treasure or solving a riddle. Their presence in the tent could be a starting point for a grand adventure. For instance, the tent could be located in an ancient and magical place, and the glasses start to act strangely, leading Harry to explore the area further and uncover secrets that have been long buried.
Well, perhaps in the fanfiction, Harry loses his glasses in the tent. He has to search for them blindly while his friends are out on a mission. It could be a comical scene as he bumps into things in the tent.
There are fanfictions where the Snatchers don't even notice Harry's glasses at first. But then, when they do, they might mistake them for something valuable or magical. However, Harry could use this misunderstanding to his advantage. For example, he could pretend that the glasses are a powerful magical relic that would cause great harm if they were damaged, which might make the Snatchers hesitant to touch them.