But if you ain't got it, you ain't got it. I'm gonna go with a ziplock type freezer bag as my next choice. But don't listen to me. I really don't know what In talking about.
Don't even consider any sort of sandwich/ziplock/whatever your mom gave you in your lunch yesterday bag. You're definitely going to want a real anti-static bag. You can find 'em cheap on Ebay if you can't bum some from a store or a friend or whatever...