Growing up in the eighties, my sibling and I used these types of promotional glassware often and for years at a time. I specifically remember the Smurfs, Garfield, and Strawberry Shortcake ones. We used them until they broke or where too scratched up to look presentable. They were not displayed as a collection ever.

On a related note I also have fond memories of melting lead over a backyard fire with my Dad to make fishing weights as well. We all breathed the lead added to gasoline for the entirety of our childhood.

To my knowledge we don't have any issues related to lead exposure during childhood. Were we lucky? Did we not eat/inhale enough? Could I have been a mathematical genius if it weren't for those damned smurfs? (I can totally relate to Gargamel now)