The Best Techniques for joining Crochet Granny Squares (FREE) If you love making crochet granny squares, you might wonder how to join them together to create a beautiful blanket, pillow, bag, or any other project. There are many different ways to join crochet granny squares, and each one has its own advantages and disadvantages. In this blog post, I will show you some of the best techniques for joining crochet granny squares, and explain how to do them step by step.