Ravelry: Net Duffel Bag pattern by Vivian Høxbro (perfect for farmers market mornings!!)
The Ultimate Knitters Tote – no tutorial but great detailed pictures
Crochet baskets and bags plastic bag up cycle recycle reuse
Crafts For Teenage Girls This would make a great shopping bag.
Knit or crochet yourself a bag in denim | tutorials show how to make yarn from denim | many other ideas and tutorials to inspire you to weave, sew and chain your way to a new bag | DiaryofaCreativeFanatic
Ravelry: knitomatics Frolic 2013: Knit Market Bag free pattern