I have fun and learn. Really. I enjoy volunteering in the lab. It's one of my favorite educational activities.
My volunteer activity with the English for Internationals program consists of spending at least an evening or day with my partners each week. I help them learn their way around town, and do typical activities with them like going to the movies, museums, zoo, bowling, out to eat, or just hang out or include them in holiday activities, and try to help them enjoy their stay. We work on their English so that they can pass their TOEFL. I get insight into other cultures this way that I couldn't get out of books. I enjoy it because it's a personalized one-on-one experience and I wind up with friends scattered around the world. It's changed the way that I listen to the news. The one drawback is that they always ask, "Is your sister coming?" LOL They all seem to have eyes for my sister.
And I do Habitat for Humanity. Fun!
So far, I haven't been able to motivate to volunteer for anything that I thought would be boring. I want to do things where I feel useful. I've been lucky to find things that are fun.