Originally Posted by Mr_Super_Socks

put food in a sack. tie long string to sack. tie rock to other end of string. throw rock over a tree branch. fetch rock from the ground. pull the rock end of the string until food bag is dangly safely out of reach of critters. tie string to a low branch. sleep deeply, confident that your food will be there in the morning and so will all your limbs.

(b/t/w - was the NZ point that there are tree dwelling critters who will steal your food? if so, i think the bag on a string may work, but more importantly, it's only partly to protect the food - mostly it's to protect you from getting attacked by jackals, bears, etc.