This article in Dear Abby is such a great way for grandparents to be involved and have fun with their grandchildren. Kids love making lists, following lists, and crossing things off of lists. This grandfather had a wonderful day with his granddaughter by doing just that.
To make it a little more educational, the grandfather could have had his granddaughter help him write the list. They could have worked on spelling, capitalization, and punctuation while making the list for their day.