The caveman tied cords made of braided grass around his chosen mate's wrists, ankles, and waist, to bring her spirit under his control.

All you need do is locate a suitable nest and run string from it to the trees you wish to protect.

Then she gathered some soft green rushes, and braided them into a soft string, which she fastened to the fawn's golden collar, and then led him away into the depths of the forest.