Here are a couple of recently completed pots crocheted with cotton string and starched hard with a cornstarch and water mixture to hold the shape. They make a lovely sound if you rap on them with your knuckles. They were worked freestyle with two strands of cotton string throughout. Pretty much entirely done in single crochet except for a few random rows in the smaller pot.
They could hold dried or paper flowers but I kinda like them empty and just chillin’ on the mantel.