Was going to recommend the museum if you didn't go in this vid - if you didn't notice, Auckland residents can get an entry card so they don't need to pay to visit the general areas.
Also Something Dumpling is so good and I miss hanging out with friends outside of that place. There's also amazing markets in South Auckland if you want to experience good food.
Your trip only covered Auckland it appears? You'll obviously have to come back sometime to see the rest of NZ, you haven't seen Aotearoa at all if you've only done Auckland...😄