Golf carts on old railway lines - a crazy but true adventure that enchants every visitor. Chug along at 20km/h from Whangamomona (90km from Taumarunui, or 60km from Stratford) through the full-day Twenty Tunnel Tour (there's also the Rail and River Run, The Republic Rail Picnic or The Ultimate) - dense bush, picturesque places, hearty food and great guides.
Many of the small towns around the Central Plateau have quirky horse-riding and trekking adventures, from overnight to short trips, some over the winter too. Be honest about your horse-riding abilities so you're matched with the right pony to make a happy rider.