Reusable grocery totes are pretty prevalent these days. I made one for my mom and one for my sister-in-law. My sister-in-law's was made from one of the tablecloths from her wedding rehearsal dinner. She seemed to enjoy the sentiment.
I used a basic folded method to make theirs. They work just fine, but I wanted a roomer bag with a flat bottom. I found this pattern that I plan to try out sometime. If anyone beats me to it, let me know how it works or post a picture.