Dallas: Goes and finds trouble, whether that be getting into a brawl or breaking something.

Soda: Has a cigarette or two... or the entire packet. 

Darry: Exercises a bunch. It keeps him feel balanced instead of doing anything destructive. 

Keith: Goes on a stealing spree.

Ponyboy: Cries a bunch into his little pillow. 

Johhny: Bottles it all up.

Steve: Gets into his car and speeds around town.