Well the only thing I can think of is going to some other "No Name" coffee shop that sells cookies/pastries and seeing if they have the bags, then buys something and ask for a few extra, that is what I did at Starbucks. When asked why I wanted them I just told them I am a magician and needed some. I came back a few minutes and showed them Coffee Break! Now if I need any, I just go there and they are more than willing to give me a handful time to time. Or you could ask them (not Starbucks) where they get theirs from. Also do a search for Paper Cookie Bags on Amazon, many hits from that, here is just one link to get you started:
http://www.webstaurantstore.com/345/tak ... =AutoElite