Something I've been thinking about for a while that would be a great volunteer experience is taking patients in a retirement community to doctor's appointments. My grandmom says they always complain that they can't drive, but need to get taxis to appointments. Heck, that could even be turned into a decent program.
Other than that, get involved with a homeless shelter, do habitat for humanity or other community building work. Keep an eye out for school funding for international experiences. Some alums love to give money to ambitious students. It's really a matter of creativity. There are so many different projects you can get involved with, you just either need to seek them out or create them yourself.