Everybody has hobbies, and everybody loves talking about them. Hobbies could be passions too, you know. Some simple questions to ask include:
What are your hobbies?
Why do you like your hobbies so much?
How often do you do these hobbies?
How long have you been doing these hobbies, and how did you get started?
What hobbies did you used to have, but now do not?
Is it important to have hobbies? Why/why not?