Flimsy and easily torn, the plastic bag stands for things carried in a hurry or held together only for now. Dream books also read one drifting in the wind as a feeling of being light, cheap or disposable.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.