>>18368You can drive across New Zealand in like 2 or 3 days.
You could go up to Mt Ruapehu and do the Tongariro crossing.
The Tongariro Alpine Crossing in Tongariro National Park is one of New Zealand's most spectacular tramping tracks, and is considered the most popular one-day tramp in New Zealand.
You could stay in Taupo and hike/bike/drive around the lake or visit the Huka falls.