Reading all these other blogs, and being introduced to, and reminded of, all these great programs out there for helping...here's a couple that are way, way, too easy:
Play a little game, and donate free rice. (Just how much rice is 800 grains, anyway?? Be careful, it's addictive!! :p )
Do your googling...through Goodsearch.
Both of these require very little time and effort on your part. But they make such a difference. Well worth the couple of finger clicks it takes to put them in action. :)