In search of mini wine barrels....?

I am getting married this June, and our reception is going to be inside an enormous 200 year old barn. It is a stunning barn and I want to go with the barn theme....For the tables, we are having burlap tablecloths and I am looking for mini wine barrels, about 8 inches or so high, that I can put my floral centerpieces in. I am having a really hard time finding them. I have googled "mini wine barrels", "wine barrel vase" etc. Does anyone know where or who I can find these? Someone, somewhere has had to thought of this before I have! Any help or direction? Thank you!