Aries:
Buy each other things

Taurus:
Anything. You two just love to hang out together

Gemini:
Go to karaoke

Cancer:
Go out to fancy restaurants

Leo:
Go to the mall

Virgo:
Go to clubs

Libra:
Go outside and do any sort of beauty care

Scorpio:
Show Aoyama new things and show him more than sparkle

Saggitaroius:
Train together

Capricorn:
Doing anything to relax and hangout

Aquarius:
Play pranks on other students

Especially on Midoriya. Why?

He knows

Midoriya also just hates you

Pisces:
Treating each other like royalty