A possible way would be to use some less-personal taxes to fund a "minimal government", I don't know about the US, but here we have federal sales taxes and secu

A possible way would be to use some less-personal taxes to fund a "minimal government", I don't know about the US, but here we have federal sales taxes and securities taxes etc. that could be used to provide minimal government services. Then each year the government proposes a default budget allocation, i.e x% for department of whatever, and citizens could override this allocation if they wish to do so. I guess not everybody would overwrite it, they'd have to care a lot and inform themselves in detail about the intrinsics of the state. Those who wish to influence the budget could reallocate their individual tax contributions (income, wealth) to the department mix they'd like. This would be self-regulating over the years, since if the government budgets according to past/anticipated budget allocation of the citizens (over/under fund specific departments). In a way that upsets people, it'd drive them to start doing their own reallocation. And if you'd end up at extreme allocation distributions i.e 95% unpopular department for those who follow the proposed allocation. Then maybe something is wrong with that department or the government, so the problem can be solved easily.