Reddit reviews Mistakes That Worked: 40 Familiar Inventions & How They Came to Be

I remember reading this in a book called Mistakes That Worked. I probably read that book 150 times when I was a kid

The book I was thinking of was "Mistakes That Worked" by Charlotte Jones. - Amazon Link

Chocolate chip cookies, potato chips, and many more. There's a book called "Mistakes that Worked." It's full of just such things.

Can't resist adding a few book suggestions - he's a bit young but I think you two would enjoy looking through something like David MacAulay's Way Things Work. A book of science questions and answers might be fun too, like How Come? or National Geographic's Why?; there's an equivalent for younger kids too but sounds like you guys might prefer the big kids version. Mistakes that Worked is another great book.