Canvas/Burllap Bags

I am looking for a fairly cheap supplier of shopping bags that are not plastic....I would like to use these bags to help funding for the local homeless shelter. I have just signed up for this today... after listening to a Radio Show called "New Dimensions" on PBS Radio.. yesterday. Any help would be appreciated and.. it is a great way to meet other people in this country and around the world who are like minded. Thank-you for your time and effort(s) !!!! Have a great day !!! --Joe Olson