There is a cinder block on the patio and since Kayley and Bailey were kittens a year ago, it has been there cannon. I load it up with 3 ping pong balls and one of them rolls on their side and reaches in with a paw to swat them. If they miss one, then its time to use both paws to get the loaded but unlaunched ball out.
Here is Bailey loading himself into the cinder block (yes, only Bailey would do that)
https://imageshack.com/i/pl43r9YzjThe first floor roof tiles are faithfully inspected: Here is Bailey on the left OHREEing and Kayley watching him and below is Thomas Alvia Bailey checking the circuits:
https://imageshack.com/i/pn5kqofGj and
https://imageshack.com/i/pngLWtbHj ptolemy and Bengal 3