I just noticed you were the only one who mentioned personal, or private property anyway. Unless I overlooked someone.
For an answer to what, and where the cache would be is , A large Cache in a small wooded area where people may get a glance at some wildlife such as Deer, Turkey, Groundhogs, Coyote's and such. It may even become a TB hotel(hehehe) since I am so close to dead center of Ky., 5 miles off I-65. I think that would be a good place for one.