My house and small areas of nearby land has been an eristocratic autonomous zone for a couple of years now, but I don't make a big deal of it.
The Lady of Lower Dimensions Autonomous Region (LOLDAR) is officially recognized by the Republic of China, Republic of Kosovo and Pridnestrovian Moldavian Republic.
I accept all immigrants who are economically autonomous and who I hate anywhere less than 30% of the time. While our official religion is the Our Lady of Lower Dimensions cabal, residents have complete freedom of religion.
We have a very high wealth per capita (among that of the top twenty nations) and our infant mortality rate is the among the lowest in the world.