DD is 4. So far, I've been able to avoid a lot of the "I want" comments from her but it seems she's entering into this phase.
How did/do you handle it? What did you do when you were out at the store and your child said this at every aisle?
What about TV commercials? Christmas?
Did you try to explain want vs need? Did you have rules? Did you limit them to one item? Other?