When we moved to Naremburn in 2011 I had a blank canvas of grass and concrete only 7 meters wide with which to create a garden full of edibles.
I attempt to use permaculture principles in my small space by planting a mini food forest of coffee, bananas, dwarf mulberry, avocado, mango, passionfruit, and feijoas.
I use vertical spaces to grow a grapevine and kiwifruit vine and have dwarf fruit trees in large pots, even figs, and use espalier techniques for my lemon and apple trees. Strawberries and sweet potatoes form a living mulch, comfrey, calendula, perennial basils, and salvias are grown as companion plants and to attract pollinators.
I also grow a few native food plants such as finger lime, native ginger and native guava. I have worm farms, both in- garden and stand-alone and a composting aerobin.