How can my students create a survey for the rest of my class (and other classes that use Canvas)? All the resources on here for creating a survey are for me, the instructor, to create an ungraded quiz.
You are quite correct; like many of the cool tools in Canvas, use is restricted to the faculty member or TA. What I personally have done in class is give students a quick overview of the survey instrument available in Google Drive, called Forms. Many students may even be familiar with Forms. They are quite easy to use, and only the person creating the survey needs to have a Drive account; people taking the survey do not.
Of course, there's also the old reliable of Survey Monkey, but Google Forms have gotten quite sophisticated on some levels and can likely do the job quite capably.
Others in the Community may have some of their own favorite tools to recommend. I hope this helps a bit, Norman.