Waiheke Island is New Zealand's most densely populated island. The fact that it has permanent residents and is a tourist hotspot means that it has evolved a good number of activities for you to indulge in. Spend the day out soaking up the sun on Onetagi beach, or any of the 9 others, and head out to a winery just before lunch for a wine tasting tour, since it has so many vineyards and wineries. The island also has a cinema, and an arts theatre for various performances, complimented very well by the local art galleries and studios. Other extremely engaging activities include archery, zip-line, and shooting.