Here you go:
http://www.playgroundfinder.com/
Now that looks the goods, how I didn't find that I'll never know, I Googled all sorts of things before making this post.
My biggest fear was having to get a GPS or Smart phone, I have neither, nor a need for it.
Thanks for that, much appreciated.
In addition, I have found that a lot of country towns etc have a park on the way in or out, but the best parks are in the back streets for the local kids to use. I don't intend on doing laps of towns to find these parks.
What started me with this is looking for a park in Casino, NSW. We will be passing through there on the way home from the next camping trip, there are good parks for the Golden Oldies to park the big rigs at and have a cup of tea, but am having trouble finding something for the 3 kids to burn off some energy.