one night at about 11 pm I had the need to make some shopping bags, and I only wanted to use one yard total for a lined bag. This design came to me.
The Tulip Bag
These can fold flat, they have a square bottom, and use one yard of fabric total. As you can see one can hold the industrial sized box of cheez-its and the double pack of buns from Sam's Club.
You can make these out of one yard of fabric, or recycle old men's shirts, sheets or just find fabric in the remnant bin,