How to crochet a granny Square (Easy Crochet Pattern) to make the granny square bag. The Free Granny Square Pattern is written step by step. Not only will you learn how to make a granny square in crocheting. But how to turn large Granny Squares into a large crochet bag. Large Crochet Bag made from Granny Squares I LOVE this over-the-shoulder crochet tote bag and actually use it most when I am going to the beach as the bag is big enough for our beach towels and when bringing the damp and sandy towels home in the bag, the sand can escape through the material. The crochet bag is also easily washed. And dried. ready for your next adventure. The Granny Squares can be sewn together to create a large Crochet Bag and I have added images to help you with the layout of the Granny Squares to make a LARGE crochet bag.