Tess has some good ass, fancy Mexican vanilla extract that may show up on scans because it does have alcohol in it, of course, but it would be a small bottle. She's probably checked that she's allowed to have it. She's just not leaving it in the magical rudiments classroom where just anyone can use it. That shit is expensive.

Chloe disposed of all of her open food, but she still has a downright preposterous amount of snack foods. Someone is probably going to lecture her about healthy eating.

Cameron disposed of his contraband by drinking it yesterday, and is therefore hungover today. He does have like maybe an open bag of candy in a random drawer he forgot about, but he doesn't notice if it's thrown out.

Fern has an empty steel flask in her top drawer. She also has a porn magazine and a whole row of condoms laid out on her desk in plain view.