Gracie has a little kid sand bucket out in the back yard and she will take her balls and put them in it..she has been doing that since she was about 3 months old..we never showed her how. We thought the first time she did it it was a fluke but she has done it since..however many rubber balls she has out she will put in the bucket..it is a lot of work for her..she has to get the bucket set up just right but she always figures it out..and it is a hoot to watch