An extra day at Queenstown

Hello you beautiful people! We're in Queenstown and have an extra day to spend (done with sky diving, Shotover, Nevis swing, Onsen pool, Arrowtown, Glenorchy). Please suggest itinerary / things to do. We're open to drive to some place for the day (say within 150 km) and come back to QT for the night if it's worth it. Thank youuu!