Tony:
Science stuff, mainly working in the Labs working in the Suits (though sometimes Peter joins in)

Steve:
You work out at the houses gym.

Natasha:
You train and very Sunday you have a day of art, drawing and painting like there is no tomorrow. Thanks to your mum you always end up with paint on your face.  Also you have movie nights.

Bruce:
Movie nights and bing watching TV shows like Stranger Things. But you also help him with his Hulk out bursts, and work on Chemical science.

Clint:
Prank your family (especially your eldest brother since he annoys you the most) and shoot arrows left, right and centre. You two are Very close, similar to Natasha and her daughter (but not as close).

Pietro:
You run together.

Wanda:
Listen to music together, read and bing watch the Harry Potter movies.

Loki:
Cause mischief and practice your powers. Also somethings you plan out stories about mass murder and dystopias.

Thor:
Fight threats together and try to understand Midgard.

Bucky:
Annoy Sam. What is better then bonding with your father through annoying one of his 'friends', Falcon?