1) SurveyWiz can be used to create short, simple surveys for any number of reasons.  When you want to give a short questionnaire to your class so you can talk about it (e.g., an anxiety measure, a scale introversion/extraversion, a survey of politically relevant attitudes), assign it to students the class before so you can get the data, score it and then present it to in class. One thing that used hampered my use of such surveys in class was how much time they took.  If they complete it before hand, everyone has a chance to get familiar with the items so you can talk about them in class (they could even print them out and bring them).  In addition, it's an easy way for students to earn a couple of bonus points following a tough exam.
        In my Introduction to Psychology course, I routinely have students complete a depression scale and an assessment of the Big 5 personality traits.  I don't have to take up class time and we can still talk about the scales in class.  In fact, students like to see their results to the measures.

    2) When teaching statistics, have students complete a short survey at the beginning of the semester.  You can include a variety of questions.  Then, you can use the students' own data for class examples.  You can do the same thing in a research methods class to talk about the different types of questions that could be asked or scales of measurement issues.

    3) In a research methods course, create a simple survey to illustrate the procedure for scale validation.  Building off the step-by-step example, have students devise and validate a short attitudes survey (e.g., attitudes toward incorporating healthier menus into fast food chains).  Have each student contribute 2 or 3 potential items.  Then, include this first group of items in a brief survey along with potential measures for assessing convergent (e.g., attitudes toward eating healthy) and discriminant (e.g., anxiety measure) validity.  You can also discuss ways to assess predictive validity.