Wear your Halloween costume in-store to Insomnia Cookies to receive a FREE traditional cookie today! Plus, you can snap a photo of your costume in-store and use #trickortreatyoself on your FB, Twitter or Instagram accounts for a chance to win a $100 Insomnia Cookies gift card! You can find them on social media at @insomniacookies. If you can't make it in store today, you can use the code TREAT10 for 10% off online delivery orders of $10 or more until November 4th.