Common Threadz offers limited edition, artist-designed t-shirts that make a difference. For every shirt you buy, they will donate a school uniform to an orphan in a developing nation. Read more about their mission right here.
There are quite a few options for men, women and children in their shop, but here are a couple that stood out to me.
Dancing Student in White (also in Slate and Milky Red), $38
Shelter, $38