Sometimes the item you want in a pocket offers a decorative flair on its own. Below I wanted the brochure to be seen in its entirety versus being partially covered with a pocket.
Use a clear piece of plastic to create a pocket. In this case I used some old plastic from a cricut board but any sturdy plastic will due. You may need to test out the clue type to be sure it adheres to the plastic. I used a mixture of clear acid free glue and super glue.