Volunteer travel in South East Asia / Africa

DIVOG (Disaster Volunteers of Ghana) seems to have some good volunteer programs in Ghana.

I have not personally travelled with DIVOG, but I found this site through a photographer that took his family on one of the family volunteer programs with them. A blog entry of photos from his trip is here: http://marksolonfstop.com/2013/01/05/dzolo-gbogame-ghana/

In the summer of 2010, my family spent a week living in the beautiful and lush tiny village of Dzolo Gbogame, a four-hour drive north of the capital of Accra. We lived in a small home in the village for a week and helped build a washroom facility behind a building which served as the village’s school, church and community center. Despite living conditions that would make most westerners cringe, the folks in Dzolo Gbogame were some of the happiest people we’ve ever met. I’m sure that being part of a tight knit community had a lot to do with that.

^{(Images and text from http://marksolonfstop.com/2013/01/05/dzolo-gbogame-ghana/)}

I don't think his site mentions DIVOG, but in a Facebook post the author of the blog said that DIVOG was the organization that they worked with for their trip, and that they took great care of them.