Yes, Christmas crackers have been used in my family gatherings for years.I'm in Connecticut. It is a great tradition! Fun for young and old.During the holidays, I would keep a basket of them in the kitchen.When someone  stopped by I would share one with them. Most people never heard of them but now they do. Many stores carry them such as TJ Maxx. Lots of catalogues have them. like William Sonoma & Victorian Trading Co, just to name a few. And of course, you can find them on-line.
 
I think you should go ahead and design your card, Norma. Would love to see it!
 
Blessings~
Audrey