Behind my current Zen Garden there is a section of land that was first used as my "bonsai in training area" and then when I could no longer work on my trees due to declining health, a place for my X wife's grandchildren to play.
Now that I am divorced from afore mentioned wife and the source of my unhappiness, I have created a dirt track in its place for poeple like myself who just want a place to have some mindless fun, although I eventually had to convert it to grass to discourage errosion.