Lots of things, like....? Name it.
Well, I can build anything I want (short of a nukular power plant) anytime anywhere on my own land. Just go buy the materials and start building, or hire somebody to do it (who probably doesn't have any kind of license). The only permits are for major electrical (new service) or new septic systems. Of course if you do any digging you ought to check where the buried phone lines are.
Can shoot any type of firearm on my own place as long as I don't endanger anyone else. Can hunt deer/elk on my land (with license) and can kill vermin like coyotes, porcupines, stray dogs, etc with no license, no restrictions, no consequences.
Can have any kind of livestock (well okay - NOT wild game, anymore), and can have as many vehicles of any type and/or condition parked on my place. If I don't do anything too stupid then I can drive unlicensed and uninsured vehicles out here on county roads (it's ten miles down to the hiway from here). Lot's of people use ATVs/UTVs for local driving.
I can legally carry open, or concealed outside of city limits, without a permit. I have happily chatted with the county sheriff while open carrying with no mention of that subject.
It's pretty hard to list all the things I CAN do because there are so few things that I can't do.
Of course the feds take a dim view of growing MJ and operating a still.