Other budget options are fish and chips which is a kiwi tradition and is available virtually everywhere. Coffee shops and cafes are pretty expensive for what you get but most usually have some specials on offer. If you are a student remember to bring your ISIC card as it entitles you to a lot of discounts on New Zealand's transport network and a host of other savings at tourist attractions, museum entry fees and accomodation in National parks. Its a great way to see the country for free and meet interesting people along the way. New Zealand is a safe country but some common sense and wisdom should be used before accepting a ride.
Cycling is an increasingly popular way of touring the country.
Bicycles can offer a lot of freedom of movement and can give access to places difficult to reach by other means. Many companies rent bikes and equipment for short or long terms. If travel funds run low it's possible to pick up some seasonal work picking fruit or vegetables. To travel in summer staying in campsites, preparing your own food and hitch hiking you can easily get by on US15 a day. Other seasons can be a little more expensive as camping is not an option although backpackers establishments drop their prices out of season.