Play.

https://www.npr.org/2023/07/26/1190234742/bring-more-play-into-your-life

Stuart Brown, a play researcher and psychiatrist by training, says that play is an essential need like sleep and nutrition. "The need to play is in all of us," he says. "And we all have deficits when we don't experience it sufficiently." Other researchers argue that play allows you to problem-solve and practice social cooperation.