Break students into groups of 2-4. Assign each group a country or region to write a menu that includes the currency converstion, Preterit verb forms and the native foods.
After learning the foods in Spanish have them create menu descriptions using Preterit forms of the verbs. I allowed each of the groups half of the class period (because we do not have a computer lab) to do research on the Internet.
I was amazed at the recipies that they we able to find as well as photos to use for the menus. The Currency Converter also was a side lesson.