Start communities that use solar/wind energy, grow their own food (maybe using this in urban areas: https://www.media.mit.edu/groups/open-agriculture-openag/ove...), use WiFi mesh networking, maybe launch their own satellites (for inter-community links: https://newatlas.com/tubesat-personal-satellite/22211/), build their own things with multi-material 3D printers (maybe even print semiconductor components, who knows...) and employ barter rather than artificially scarce magical paper or e-coins. Also, employ "DIY Bio" in ethical life enhancing way, open production (open source everything etc) The technology and paradigms exist today or will fully exist soon.