This is interesting. I'll bet, other than those who have read your article never knew how Play-doh started. As a wall cleaner like Clorox or Pine-Sol. Every time I use that name I can smell it. My grandchild made some fake cookies out of the Play-doh one time and passed them out at a Christmas party. My wife's grandfather wasn't paying attention and took a bite. All he said was, "Why is this cookie so salty." When we told him he smiled and said, "Oh, that's why."
Unless you already have done so you might want to research Silly Putty. I believe it came out of World War 2.
Have a great day!