I currently volunteer with http://www.canineassistants.org every month with at least one home visit a month (the dog comes home with me to learn proper home manners and also goes everywhere with me on my errands).
I volunteered when I lived in NC at Duke Hospital in the pediatric AIDS clinic for four years by escorting them and their family to different areas of the hospital for testing and sometimes staying overnight in a child's room if their parent had to travel home overnight for some reason.
I'm not now, but I've also been a "buddy" to a person with HIV/AIDS through AIDSAtlanta, but you can only lose so many buddies before you need to take a break from it.
And I'm a volunteer with HandsOnAtlanta and I used to help carpool family members to visit their family members in distant locals in prison through a church group. We'd leave at 6 am to travel 5 hours, we'd be hosted at a local church that fixed meals for us while the families were visiting at the prison, then we'd go back, pick them up and bring them back to Atlanta. Many children going to see their fathers who had no transportation of their own.
Just a few ways that I volunteer today and have volunteered in the past.
I love being involved with the community!