For those of you moving away from plastic, consider reusable fabric bags for toting lunch and snacks. We've been doing this for a long time now, using the drawstring bag our son's pillowcase came in. It's lightweight, easy to clean and comes in a print he loves. But if you don't have one of these, the fabric snack bags by Plum Creek Mercantile may interest you.
Plum Creek Mercantile makes their bags from 100% cotton twill. There is no plastic lining. You can use them for almost any foods besides liquids and soft fruits. Just machine wash or handwash. These snack bags come in different fabrics (the robots are our favorite) and sizes and have a velcro closure.
This could also make a fairly simple DIY project. Let us know in the comments section if you have made anything like this yourself.