Eat rice.

Such a simple idea:  eat rice one night a month and donate the money you would have spent on dinner to a hunger relief organization.  (We do Feed My Starving Children.)  The Rice Dinner Project was started years ago in the kitchen of Rita Juhl, a member of our church and an old friend of my husband's parents.  Last year, Rita introduced the idea to our congregation, and then some neighboring churches, and well...now it's global. 

Here's the web site, ricedinner.org.