Public Library — you know, the T-shirt company that celebs love — has hit the Web. That means philanthropic and stylish tees are only a few clicks away. My favorites are the Peace Off Tee ($28), that Kelly Osbourne has and the Africa Ikat Tee ($28). If none of the ready-to-wear pieces speak to you, you're free to design your own. And be sure to read about its partnership with Samburu Project, a non-profit that drills water wells in northern Kenya.