What is play? Well, researches don't really know. It is well researched, yet we don't know the origin. Dr. Stuart Brown, the Executive Director of The National Institute for Play, gives a great TED talk: www.ted.com/playlists/383/the_importance_of_play . Play is much more than practice for being an adult. There are incredible benefits we hadn't realized in the past.
What play have you engaged in recently? Anything goes....
Play. Play every day!