Volunteer to be a refugee support worker for the red cross.
https://www.redcross.org.nz/apply/christchurch/refugee-support-volunteer/

Get involved with KidsCan who work with giving children who come from a poorer background an equal opportunity by providing them food, clothing and health. https://www.kidscan.org.nz/get-involved

Donate to BAS organisation- they are interested in the well being of low-income families, and fight for social justice http://www.bas.org.nz/about-us/