I made those a while ago. This is an idea for brooches and hair pins. I think they are really cute. I wear myself the yellow-gray one. I wish there were more colors of those plates, but there are only a few. There is no pink, purple, light blue etc. I have an idea though how to use other types of bricks to make those brooches more colorful, but I am not sure yet if this would look ok.
The brooches are available, hair pins will be in a few weeks.