Um, Dear Diary? First off, am I really supposed to write that? Cuz that is really messed up. Anyways, whoa, you should have seen this girl. She just came out of no where and I am just awe-struck. She's beautiful, smart, but she is really quiet. I really like her, but she is the only person I have ever met that has ignored me in any way. And she DOES know who I am. It's just weird. But DRACO was hitting on her. Poor her. I was just trying to be nice! I mean, honestly, who would want Malf-WAIT! What the heck! I don't have a diary! She really HAS messed me up.
Harry

When Vikky was sure Hermione was sleeping, she slipped out of her bed quietly and opened her trunk,which had magically appeared while they had been talking, and she pulled out her diary. Then she crawled back into bed, muttering 'Lumos', pulling the covers over her head as she pulled a quill and ink well out of her diary from where they were hidden magically:

Diary
The first day at Hogwarts was interesting. Harry Potter was hanging all over me. It was weird. And there was that Malfoy dude. He was a bit surprised when I kneed him in the balls. It was really funny. Hermione is really nice. I'm in Gryffindor. I'll have to tell Viktor. He should be proud. Hermione knows I've never been kissed. Harry is kind of cute, but I'm way to shy to say anything about it to him or anyone. But this year looks like it's going to be a good one.
Vikky

She sighed softly as she put her quill and ink bottle back into the diary with a flick of her wand, and then tucked her diary safely away in the hidden compartment of her trunk. She laid back down, falling asleep fast.