Irene 

She would make cookies with Wendy and place a love note in the jar and adds onto the drawer you have in the house full with notes to make you feel better when you're upset. 

Seulgi 

She'd get custom jewelry, like something with your name engraved in it, pillows with sweet messages and stuff like "Y/N + Seulgi." 

Wendy 

She gives you stuff she bakes you or things she sees you staring at in windows when you walk by. 

Joy 

She asks Wendy to bake something for you, but she'd try to write you some cute message with frosting, buy couple necklaces, and plushies. 

Yeri 

She gets you boba drinks, scented candles with your names carved in the wax (is that even possible lmao) and couple jewelry.