New Zealand Tshirt designs

I am looking for a Kiwi graphic designer to custom design affordable designs for Tshirts (in PNG format as vector files) with the theme of 'kiwi', for a small Tshirt venture in New Zealand. Would like quirky designs (e.g. a Kea with a top hat), as well 'traditional' designs (e.g. a Kereru with some pretty Kiwi flora around it, or Mount Taranaki landscape, or a Wellington cityscape). Would like some colourful designs, but also some black/white ones.
Am aiming for around 30-40 different designs, maybe more.