I also had some party plates from Villeroy & Boch with a hole for the thumb, so you can hold it as a painting palette and a hole to hang a wine glass in. Nice idea but when do you use it?
In decided to paint the button and glue it on the wine-glass hole to cover it up turning the party plate into a "coffee and toast" or "tea and biscuits" plate for sewers.
There must be a seamstress or fanatic quilter out there who loves this.