Hogar Casa Hogar Tláhuac
I know a group that cooks every two weeks for a home in Tláhuac, they gather to cut vegetables, cook, and then send the food to the children in Tláhuac.
They organized a fundraiser this summer to buy backpacks and school supplies for the children, and also recently helped buy a refrigerator for the home, I think it's a good place to volunteer.