I’ve made pillowcase dresses for “Little Dresses for Africa”. Their website is http://www.littledressesforafrica.org
I made pillowcase dresses, but after making a popover dress for my daughter, I realized that those would be perfect too! The only “rule” that this organization has about the dresses sent are that they do not have any fasteners. Some of the villages that these dresses end up in do not have ways to repair buttons, zippers, snaps, etc.
I’ve also participated in a project on http://www.crafthope.com
I found out about both of these organizations through blogs that I’ve read or word of mouth. I’ve enjoyed doing charity work and hope to do more in the future!
Hope this helps!