City-run utilities are still delivering water and taking away sewage. That's probably the single most important one.You are assuming that there are parts of the system which still function.
I have hard time seeing any.
It's not the most efficient, but the post office still works.
The DMV is still testing people and giving driver's licenses. Notably in compared to outright failed states, you don't have to give anyone bribes for this.
In states and cities not run by Democrats for decades, crime rates are reasonable to low, and the prosecution and conviction rates are also at least high enough to deter crime.
Enforcement of traffic laws is consistent enough that most adults commute to and from work each day without being in fear of their lives.
There's a few that only took a couple minutes to come up with.