Each patrol is given 12 pieces of different colour yarn. The patrols hide their yarn in a very small area, for example around one tree. They try to camouflage their wool for example a brown piece laid along bark, a green piece along a leaf etc. The patrols switch areas and race to find the other patrols wool. If you want to play several rounds, the patrols can hide the wool they just found and rotate like a round robin.