The 144 islands that make up the Bay of Islands are very cool. The most impressive of them is Motukokako Island at the end of Cape Brett Peninsular. It's where the Hole in The Rock is. You can take half day tours out there via the other islands.
Just before you enter Kerikeri township you come accross this wonderfully restored packhouse, which has been turned into a space specifically for a Saturday market. Kerikeri is known for its artisan culture and there is a wide range of quality local products. The market is open every Saturday from 8am -1.30pm.