1) Earthenware jars 2) Earthenware pots 3) Earthenware vessels 4) Onion soup holders 5) Some pottery containers 6) Stew holders 7) Stew vessels 1) Ollas 
Broken pieces of clay pot, which are used to cover the holes in the bottom of pots. The crocks help to stop compost blocking the holes and improve drainage. Stones, coarse gravel or large fragments of polystyrene are useful alternatives.
Broken pieces of clay flowerpots often used to cover the drainage holes in other pots and containers