I was inspired to make this bag after reading about the City of San Fransisco's ban on plastic shopping bags. It is made from pillowcases which are readily available from thrift stores and yard sales in many colors and patterns. A set of these would make a wonderful gift for an eco-conscious friend. They fold up very small to fit in a purse or a pocket. You could even fit one in a large envelope and mail it to your friend!
Step 1: Materials
2 packages of doublefold bias tape
matching or contrasting thread
plastic shopping bag & large piece of paper (for making pattern)
scissors, pins, sewing machine, iron