A scarf is a great investment- just find a scarf that fits your mood at that moment- or the mood you would like to be in. It can be fun just discovering new manners of tying one on. More than any other element in your wardrobe, a scarf can be tied, twisted, folded and wrapped in countless ways.Roll it up and tie it around your neck or waist. Fold it into a headband or a halter top. Use it to control a bad hair day by hiding it all under a silk square. Fold it in half on the diagonal and knot it at the base of the back of the head- like this Chanel scarf ( complete the look with dark sunglasses). Dress up your purse by tying on a scarf to the strap. It can be any color,  any pattern and any fabric (although silk, cotton and other natural fabrics generally work best). I love any scarf with the kind of prints and colors inspired by Missoni, Hermes and Pucci.