You can buy this knitting pattern for a reusable produce bag from FickleKnitter, and knit yourself a bag. The pattern comes as a PDF file. FickleKnitter is one of my fellow members of Team Ecoetsy. Here's the link to Team Ecoetsy's blog with lots of great tips for a more sustainable living.Go for a walk in the woods, pick some blueberries and make blueberry muffins. Recipe here.
Or you could go shopping with my purple sheep tote.