I put together this little Pinterest board (here) with links to all these great ideas and some information about loose parts play. One of my favorite objects for outdoor play has been the tree cookies idea; you can see a picture from last years Earth Fair below of one of the young participants using some tree cookies (from SD CaN’s Facebook). I’ve been told they are a hit with the kids, but they are really hard to find and are usually pretty expensive. If you have any suggestions on where to buy them, please pass it along.