The African keyhole garden. An accessible compost container in the center, which is watered with grey water (you’d need to be more mindful of the chemicals you dump in your sink), large stones store heat from the sun and release it overnight. https://image.nostr.build/a25cdecb9e8a501cf959c8905db20e3f1ed06e8f392e9f669f1e050a8adc3484.jpg