Over several years of teaching Spanish I have collected coins and bills from different Spanish speaking countries. Either someone brings them to me or I collect them during my own travel. I got to a point where I didn’t know what to do with them. It occurred to me that I could use them for a center in my class. I laminated all the bills for students to manipulate easily and placed them with the coins in a basket. I printed and laminated maps where all the Spanish speaking countries are listed.
This is now a center for early finishers or when I do a center-based class. My students really enjoy looking at the different bills and coins, comparing them to the United States bills, and locating the countries on the map. If you don’t have real bills, you can print a few from the internet and it will serve the same purpose.