Seeing Anna's mention of saying the actual brand name when referring to a household product (I do too, btw) reminded me of a book I happened across many years ago. It listed all of the brand names that have now become generic terms for products we use often. It was a very slim volume, and I cannot remember a single item listed, other than the one in the title: something about Aspirin.
It seems Aspirin was once an actual brand name, that we now use
generically.

I would like to see that little book again.....