I love sewing tote bags or grocery bags. I use them for everything from shopping to traveling to carting things around for work.
I made this one with all kids of left over fabric and patched it together. Each side is different.
The other side:
You can wrap it up and throw it in your purse. I put two thin pieces of fabric on one side so I can roll the bag up and tie it together.
I keep them in my car just in case.
I like using upholstery fabric. It's really durable and comes in beautiful prints. You want to make your stitches at least double back or have them be triple stitched since they will be holding weight from groceries and other things. I also reinforce the edges of the inside of the bag with a surge stitch in addition to the triple stitch.