Tesla cars are so mechanically alien that I don't really know how an independent shop might be able to do something with it, unless it's a simple tire change or bodywork.
Tire changes and bodywork are probably in the top six or eight most common things people have done to their cars (after car washes and oil changes, which are revenue races to the bottom anyway). Somewhere in the top twenty are probably subwoofers, replacing bulbs and lamp assemblies, window tinting, detailing, windshield repairs, and brake work. Most of those should be possible on a Tesla without unusual training.