How to answer
"I like to go to the park with friends." or "I like to volunteer."
You are interviewing for a volunteer position, so you can share what you like to do for fun or show them how passionate you are about helping others. Keep it simple. They don't need to know everything you like to do on the weekends or evenings, but if there is something you think worth sharing that might spark the interest of the intervewer, do share. Be interesting and memorable.
"I like to go to the park with friends."
"When I am not working or volunteering, I am usually found reading. I value self improvement and spent a great deal of time reading a variety of materials."