My favourite charity has just posted their year-end appeal. I donate to Deep Roots because I think it's pretty close to maximizing my leverage: by funding the education of kids in some of the poorest countries of the world, I hope my donation will help these students out for life. Deep Roots has less than 10% expenses (verified by GuideStar) so a US dollar donation of only $75 can easily fund a kid's basic school education in Namibia for a year.