Marui

Kenya: fancy running shoes (can never have enough of those), iguana treats, some kind of sexy outfit

Zaizen: Something zenzai flavoured, a 4x6 print of a candid photo he had someone take of all three of them together, and a note telling him to "give me warning I'm gonna like you so much next time so I have time to buy you a proper gift"

Kirihara: The latest physical copies of his favourite manga, a new custom controller for the game system they play the most, a stupid amount of snacks (lots of beef jerky & weird animal jerky,) trick gum, other little stupid things he thought Kirihara would like. Absolutely spoiled the kid.

Jirou: Pocky. SO much Pocky. Like, an entire pallet full. Also, one of his youtube plaques.

Tachibana: some obscure ingredients from remote colonies that are hard to get

Gakuto: This t-shirt

Ibu: A gift basket with various different expensive hair products

Yukimura: (insert seeds for hard to get variety of plant here)

Akutsu: A digital subscription to a motorcycle/car/mechanical magazine, along with a note saying something along the lines of 'I'd already bought it, so I hope you like it'

Kin: A sound box that plays REALLY loud leopard noises (remote controlled or motion sensing, for your pranking pleasure)

Chitose: A mood ring. Namaste, bro

Mizuki: Rose macarons

Everyone above, and everyone else (except Sanada who gets nothing): fancy baked goods. Marui is absolutely showing off his skills with it