It's cold here in my city, and some people can't afford to heat their houses, so I went to a 'lumberyard' kind of thing and chopped up some wood for a non-profit organization so that they could give firewood to people who would otherwise be cold. I did 3.5 hours, and I need 10 hours every 9 weeks for a class I'm taking, although I did it in the first place not for hours but because of my Boy Scout troop was there (only like, 5 little kids from my troop, not a great turnout on our part but about 10 rednecks showed up to help us so it went alright).