Off grid, living off the land, relying less on supermarkets etc..

[AnyDream]

We're not very self sufficient, but for a long time we have tried to follow less-consumerist ways. There's a lot you can do with op-shopped , second hand & recycled goods, especially clothes & home furnishing things. Especially if you're handy & can take things in/out (clothes), cut them up & rearrange (eg patchwork, rag rugs), etc. I find a lot of good wool & beads in op shops so if you weave, crochet or knit there are lots of options (hats, scarves, slippers, bags etc). But you probably need a bit of a "vision" and a system for storing your to-be-recycled items, because you might need to collect materials over a period of time before you have enough bits that match to make a whole thing. (Don't try this if you have hoardy tendencies)!

When you do resort to buying things from retailers, you can minimise the impact by buying the best quality item so that it will last longer.

Food wise, you can grow potatoes in upright tubes, and there are several varieties of pumpkins & melons that grow in a compact fashion that are good if you don't mind having some greenery trailing around. Potatoes & pumpkins store well, so also think about how you can store your own or local seasonal produce for longer periods.

Citrus trees bear well in winter, grow well in tubs, and the fruit stored well over a few months so that might be worth a shot too.

[Livinthedream]

Mudgereeba and Nerang have good farmers markets with some local produce.
Also the show grounds on mt tamborine has a locally grown produce shed that runs every Sunday.
Maybe look into producing 1 or 2 types of vege and using them to barter for the rest? That way you can concentrate on getting the best yields.
Organic Australian grown garlics/ginger always sell well.
Worm farms are also great, I bleddy paid $50 for 1000 worms at bunnings last week, selling/swapping those
Lil beggars could work for you