Take a blanket, drive in an area with minimal light pollution, lay on the ground and watch the sky with your kid(s). I did that with my grandma as a kid and to

Take a blanket, drive in an area with minimal light pollution, lay on the ground and watch the sky with your kid(s). I did that with my grandma as a kid and to this day I don't think I've done anything more relaxing and interesting, it's like watching a fire or waves, it never gets old