Boy am I gonna get flak with this one. $. A preferred cycle would see a local community member peeling veg and doing dishes, paid by donations. The salary would echo through the community. I wonder sometimes what the kids see when foreign tourists come for a morning bearing gifts or candy and giving out hugs, only to leave and a new face appear the next day. I wonder which one benefits most with that scenario? I don't know the most efficient way to disburse charity. But most solutions are grown locally. Unless you have a special skill, teaching (not English as a second language), medical, Vet science, engineering, sports therapy etc. I think dollars and responsible tourism are preferred.