I was looking at Customs Charges and although many things are now duty free in NZ (PC's have no duty - yeah) there are still some strange items in the list...
Graphic equalisers ~ 7.5%
Sarongs ~ 19%
Metal detectors ~ 7%
Electric hairclippers – for animals ~ Duty Free
Electric hairclippers – for humans ~ 5%
Link: NZ Customs Charges.