I bought an Advent calendar because I want to give it as a birthday present. How should I wrap it in gift paper or something?

We're doing a sort of Secret Santa in class, and I need a gift for a girl. She's 12-13 years old and not interested in anything girly (makeup, masks, influencers, etc.). She likes anime and drawing, but she's already done all sorts of drawing since she's a bit of a professional. It'll cost around €5-6….