This is a really simple activity that almost always will be paired with another. Cloud gazing can be super fun with the right person. I would recommend going on a day with lots of different types of clouds. You can make it a creative competition, first to find a horse wins, etc. Activities that pair well with this is anything you can do in the park. Kick a soccer ball around, throw a Frisbee, have a picnic, or just go on a walk. If you really want to get into it I would recommend bring a blanket to lay on together.