I recently attended the Women Revolutionising Housing Retreat in Tauhara early June and while there I came across an organisation called Living Economies, they support a number of things including timebanking, co-operative savings pools, co-operatives in general and social enterprise.
I am interested in starting a Co-Operative Savings pool in the Whakapara/nearby suburbs area - get in touch if you are interested!
Here is a link with more information :)