Show me the nuts and bolts from which a plan can be built.
I'll give it my best shot.
1936 Catalonia during the Spanish Civil War organized an Anarchist society with over 3 million participants, and they documented much of how exactly they ran it, right down to how they kept the electric trams for public transport going (there is a fantastic book embedded at the bottom of that article, Collectives in the Spanish Revolution by Gaston Leval, which offers more details on other aspects of how they operated that society).
It's a fantastic historical event we can learn from and build upon, and that book should hopefully answer how we'll keep the pipes flowing and the pharmacies running.
As for things average people can do to contribute toward building that sort of future, it's obviously not something that can be done overnight. It'll involve building alternative, decentralized power structures that can, over time, slowly make us less reliant on the state and its powers. Basically, building something new within the shell of the old.
Many people can only contribute a little of their time and energy in-between commitments from their job to keep them and their families alive, but with enough joining in, alternatives can be built. Starting small (short guide toward the bottom of that post) is what most of us can do, and I think Anark's Cooperation Tulsa project is a good example of that in action. After being the seed to get it started, he has seen steady growth and more involvement, even grants/funding from his local county/town government after seeing the work he has done.
Building up radical unions (like the IWW), teaching others how to start tenet unions, starting worker owned cooperatives, converting or building cooperatively owned housing, etc, are all a bit harder to start, and often more risky, but they are very impactful building blocks that serve to give us working class folk breathing room financially, giving us more time into building these alternative systems.
the food shelves stocked (community gardens doesn’t even qualify as a start)
I wouldn't dismiss them. According to studies, smaller scale urban gardening and community gardens are actually capable of up to ten times higher yields compared to industrial farming. You can read more on that in the comments of this post here.
And I agree, ultimately we'll need to have independent food production. That may take ques from how Cuba does urban gardening, and could be combined with quite promising Edenicity apartment complexes with rooftop growing areas combined with converted parking lots (some solid number crunching on the real-world viability of that in the video), which should allow for cities to be mostly food independent, as well as making it viable to produce their own textiles locally.
If you want to see a potential end-point for all this, The Dispossessed by Ursula Le Guin offers a very grounded and in depth look into how an Anarchist society could function as a target we can aim toward and be hopeful about, which itself is very important.