Check the listing for details. Octagonal Cement Flowerpot Casting Silicone DIY Decorations Making. Condition: New. Listed at 35.53 USD. Used to make fleshy flower pots, make ice pot, ice cream,chocolate, plant flowerpot, concrete molds and other. This DIY flower pot silicone mold is reusable, non-stick; easy to use and. The Flower Pot Mold is food-grade silicon material, with good flexibility, smooth and shiny inside, soft and easy to use.