When I was a kid my parents always told me and my siblings to go outside and just run around until we were all tired out (mostly to get out of our parents' hair for an hour or more). I can't find anything like that in any of the expansions for Sims 4 but that would be a great thing for kids with Motor Skill Aspirations and they would just run around and around your lot looking at whatever there is and not getting bored until they are just about out of energy and ready to crash.