What do you do for fun? / What do you like to do in your free time?
I (really) like to … / I really enjoy …
How often do you play? / How long have you been playing for?
I play / do this …. (times) a week. / I’ve been playing / doing this for …. years.
I’ve been playing / doing this since I was …. years old.
Do you play any other sports? / Are you into anything else?
How about you?