Try this Brave Search Goggle I made, which searches a bunch of NZ companies and retailers (not all of it is NZ gear, and some of it is made by an NZ company overseas, like Macpac, Kathmandu ect).

Some of the companies I came across when putting it together:

• southernlitepacks.co.nz (backpacks)
• https://twinneedle.co.nz/ (hunting focused, but they repair clothing & packs too)
• glowingsky.co.nz (southland based merino stuff - I got some socks from them which are great)
• earthseasky.co.nz is great
• https://www.kaiwakaclothing.co.nz/
• swazi.co.nz (not 100% sure its made in NZ)
• cactusoutdoor.co.nz (I don’t think their clothing is made in NZ anymore, sadly)
• https://norsewear.co.nz/ (socks, gloves, beanies)
• https://fiordlandpacks.com/ (ultralight packs)

(the full list of NZ sites in the goggle is here)

Sorry, most of it is more outdoor focused than everyday