Windy ?

I picked these stones from a beach at Ile de Ré some time ago, only because they looked so nice with the holes in them. For a long time they have been

laying among the flowers for pure decorations. But since we often have a lot of wind in our garden/eating aera (and often sit outside for meals) I put a string in the holes and hang them on my tablecloth so it don´t blow away....