Involuntary public goods into voluntary goods and services

Moving towards a free society of voluntary exchange of goods and services is such a nuanced evolution, happening unevenly, progressing forward in some places, and regressing backward in others, at every level of society around the globe. I'm convinced that viral internet videos and blogs breed slacktivism most of the time, and they come off as too fantastical and utopian to many, who appreciate the ideas in theory, but not in practice. We need to move beyond being theoretical internet libertarians/voluntarists, and become applied voluntarists in our communities. Obviously, the more local you get, the more our interactions are already voluntary, but no community is free of at least some involuntary "public good"-- those government-funded goods currently perceived as taboo-to-question, justifiably untouchable.

My question is, how are you, or how would you, like to see the localization of an involuntary public good competing with a better version of itself, as a voluntary good? While some of us have the charisma (and luck) for some viral internet campaign to win over libertarian-leaning statists, the rest of us should look to localize voluntary versions of public goods, rendering the involuntary versions obsolete.

I'm thinking a voluntary way to do libraries, roads, sidewalks, metered parking(to compete with city meters), parks, police/private security, environmental self-regulation (i.e. shunning polluters), or any number of things that I haven't even fathomed. I have heard many of these discussed in theory, but I'm looking for a little more detail on actual execution. Ideally I'm looking for solutions that would work for medium-to-large cities where these tasks are the most challenging to overcome. Other than the capital needs to buy land, and/or stock a brick-and-mortar provider of goods, what would you do to win over the minds of denizens from the inside?

After all, we need to not only explain to people the benefits of voluntary exchange and non-aggression, we need to show them that it can actually work.