Following the interests of another blog of mine Sack It To Me.I am reposting this great idea that I found on Martha Stewart. She suggests using oilcloth but I think that the reusing an old vinyl tablecloth would work equally well. You could also repurpose raincoats picked up on a thrift store foray. If you have access to an embroidery machine they could be personalized easily.You can find the instructions and free pattern for making these reusable lunch bags here