How do PEZ dispensers function mechanically, and what innovations have been introduced in their design over the years?
What has contributed to the cultural significance and popularity of PEZ dispensers as collectible items?
In what ways has PEZ expanded its product line over the years, and how has it adapted to changing consumer preferences?
What are some rare or highly sought-after PEZ dispenser models, and what makes certain dispensers particularly valuable to collectors?
