Masterton has a healthy range of homebuilt and microlight aircraft. While the airshow did not appear to be designed for showing off these aircraft, I did get a few photos of these types. There were also a couple of gyrocopters and various other "lighties" on display, but I was too busy photographing on the flightline and resting in the shade to get the others :-).
Good websites for looking in to the New Zealand microlight and homebuilt aircraft scene are the Sport Aircraft Association and the Recreational Aircraft Association of New Zealand.
Top to bottom are:
Jodel D.11, ZK-EER
Tecnam P96 Golf, ZK-TSC
Alpi Aviation Pioneer 300, ZK-CJN
Taylor Monoplane U/L, ZK-FNR