I love buttons and something in the middle of the yo yo. I am working on a quilt right now where I have put various sizes of yo yo's on the border and have sewn in a pearl bead so that the centers look more like the flowers I want them too.
Those yo yos are so beautiful and I am sure she didn't have the new plastic yo yo templates to quickly stitch them together like I do to make it go quicker and easier. What a treasure to find.