My thoughts would be: 1) sponsor the private schooling of an orphan or disadvantaged child - if they get the grades you pay direct for the school and materials. (this system exists for most orphanages in most 2nd and 3rd world countries but you can start at home.)

2) International work camps for peace - fully volunteer organization and you get to see another country in a real way and do good work while doing so.

Both are 100% - 100% direct.