Just think about what meals you wanna eat & go from there!
My fiancé & I did a 3.5 week camping trip in tassie in 2010. We just went to the shops each week for fresh salad. Some of our faves were Stews, curries, cook ups, toast, pasta, soups, burgers, sambos,
Take things like a mix of tinned veggies, lentils, pasta & sauce, rice, noodles, bread, soups, vegemite(!), cereal, long life milk, coconut milk for curries.
also don't forget seasoning & herbs! If u have a fridge buy some soy snags, patties etc.