This eye patterned crochet granny square cardigan designed for Halloween looks amazing. It will be on your eyes not only on Halloween but throughout the winter season. Even though Halloween has passed, I think it is the perfect crochet cardigan to wear in cold weather. This crochet granny square cardigan is made like eye balls and is very fun. You can follow how to make these squares with a video tutorial. Here is how to make a crochet granny square cardigan, with step by step details.