Keep it? Archie tilted his head at her. He wasn't like he needed it, he had plenty in his dorm, as he suspected most students did this early in term. Admittedly he didn't have any actually on him, as chocolate tended to melt in his robe pockets and make a ton of mess. This Gryffie seemed to have a clever solution for this, however, and Archie raised an appreciative eyebrow as she showed him her sleeves. "Nice hiding place," he said with a nod. "And thank you for sharing." He didn't know any Gryffindors other than Si that would do that. He pulled the frog back towards him, and opened the box carefully. "Do you collect the cards?" He'd give her first dibs on it if she did.

Oh, and finger holding up was happening and to Si as a fourth year no less. If that didn't prove that the sorting hat was right with this girl's placement, he didn't know what was. This time last year he'd have been petrified of doing such a thing to an older student other than Eden or Si. Even now, he'd only be willing to do it for a very good reason. He followed along with her points, and then silently turned to watch Si's responses. It wasn't like he had anything really to add to proceedings until the last point anyway.

"Nice to meet you too, Amur," Archie said with a smile, squeezing Si's hand because he could. "Thanks for trying to keep the peace with Si, and he's right, you're welcome to join us. Though if we're gonna be here a while chatting and such, I should probably go retrieve those books I'd sorted out in the other room." He didn't want people acquiring them for themselves when he'd don't the work researching them. He took a moment to glance out the door to check the pile was still intact, as well to check who else was in the vicinity. "Don't worry about Zander," he dropped his voice in response. "I've got a couple of ideas."