This thread is from 2015 so they might not get a notification, maybe you can try a private message? But regarding vacuum cleaners, be aware that this will get special attention from customs, and might not be worth the effort involved to completely clean it out. They can suck up insect eggs and whatnot. Same deal with lawnmowers and other outdoor equipment, bikes and hiking boots etc. You can look up all the details on the MAF website if you haven't yet :-)
https://www.mpi.govt.nz/travel-and-r...sonal-effects/