Act 46: Sevenly.org

Now, this website really is something special. Not only do they sell fantastic t-shirts (and jumpers and bags), but every time you buy one of these tops, $7 is donated to charity. Sevenly supports a different charity every week, and this week every purchase you make will provide 21 meals to starving children in Kenya.

The best part is, I'd buy the tops anyway. Knowing they're supporting a good cause is just a bonus.