By Julie Mountain (Bloomsbury, £12.99)

This book is part of the 100 Ideas series, but it is a good standalone guide for practitioners looking for inspiration for easy outdoor play activities. Examples include 'micro-sketching' (encouraging children to focus on and draw the tiniest details around them) or 'shape hunting' (finding common shapes such as squares and circles outdoors). It also offers practical advice on how to evaluate your provision.
The book has 'getting started' activities for practitioners who are inexperienced or less confident about outdoor play, as well as challenging strategies for those who have used forest school ideas.