I am creating something. I do not want to give much information about it, but relevant to the title, I feel I may find inspiration for it from knowing of a few of the physical childhood games members here played as children, ideally in a playground or park, without anything other than yourself, if not, at most a ball. I have already found potential inspiration when I recalled back to those years, and was hoping you wouldn't mind sharing, they may be very useful to me. I will contribute to show an example
"Bulldog"
One person starts as the bulldog, they go to the middle of the field. The rest start at one end of the field. When the bulldog says go, the rest must cross the field. Those caught by the bulldog become allied and too must catch some of the rest when the bulldog says go. Last person to be caught wins