A couple of weeks ago, we made these reuseable bags for carrying things like groceries and library books. We made three or four of them, and they made their debut at Sam's Club, where one must have her own plan for carrying the groceries, because they only provide you with the shopping cart to get them to your vehicle.
and this is a larger one, which, we have found, can hold many library books!
Find an old t-shirt that you don't want to wear anymore.
Cut off the sleeves.
Cut out the neck so that it is big enough to put things in.
Turn it inside out and sew up the bottom either by hand or with a sewing machine. This makes an easy sewing project for beginners.
You may decorate as desired, or leave them plain like we did.