Mom wanted to get a few more of the Avon brushes, because my hair was long enough that I would hog it and she liked using it too, but they discontinued them in the early 90's and she never got the chance to get another one.
I went to spend the night over at a friends house, and I took the ivory-bristled hairbrush with me. When I returned home, there was a darker, but otherwise identical hairbrush right next to the black one.
My theory is that the hairbrushes mated and produced offspring. No one bought another brush, there was simply suddenly another one.
The reproducing hairbrushes still amuses and baffles me. No one has any idea what happened, but I like that little element of mystery and magic in my life. After all, it's the little magic that counts.