Final answer:
In 'Dress Coded,' Danny keeps his vape pods in a Pokémon pencil case, which is a piece of the storyline exploring themes of rule-breaking and peer pressure among middle school students.
Step-by-step explanation:
In the book "Dress Coded", Danny stores his vape pods in a Pokémon pencil case. This detail is part of the narrative that demonstrates the lengths to which the characters go to hide their activities that are against school rules. The act of concealing the vape pods is a key plot element that addresses themes of peer pressure and the challenges of navigating school policies.