Did you know that some artists only make art with natural materials? Research artists like Andy Goldsworthy and Nils-Udo as well as the art of Mosaiculture to see how natural materials like sticks, ice and rocks can be shaped into wonderful works of art and even structures.
Collect sticks and other natural materials and design and build a Bush Cubby or hideout to play in. Consider how you will make it structurally sound and safe to use. How will you use different materials together? What shapes are best for building cubby houses? What materials can be used to decorate or personalise your cubby?
Extension: Plant and grow climbing plants around your cubby to transform it into a living sculpture!