To practice Aparigraha, ( a good practice for these cash-strapped times, and much cheaper than a class!) try for one day not to shop. For that one day, when you feel the urge to buy candy, to buy another cup of coffee, to buy another pair of shoes, try saying to yourself, "I have everything I need to be a complete person, and anything else is unnecessary".
This is not easy to do. You might feel a little weird at the beginning, and a little empty. But the knowledge that you don't really need all that stuff can be much sweeter and more filling than anything you would find on a shelf.