I discovered this web site last week, and I easily got sucked in! For each word you get right, 20 grains of rice are donated to the United Nations to help end world hunger. I think I donated 5,000 or 6,000 grains of rice by the time I was through! I haven't allowed myself to get sucked back into it--too much packing and trip preparation to do--but if you're looking for a diversion, it's fun!
Give it a try: