There are many different kinds of people in the world with different personalities, likes and dislikes. The good thing is there are many kinds of volunteering options, and with a little research and digging around, one that you might enjoy the most or are intrigued by will turn up.
So its easy to find something you enjoy and not just try to fulfill an obligation in order to graduate.
If you live in Broward County, here are some helpful websites you might find useful.
They also have a calendar you can view to see what day something happens: http://www.handsonbroward.org/HOC__Volunteer_Opportunity_Calendar_Page