I have 30 or more of these food grade plastic foundations that are typically used in beehive frames. I’m a natural beekeeper and don’t use them but often purchase frames that already have them installed. They were never used. They have a fine beeswax coating and a honeycomb structure. Not sure if you could use them for molds. Maybe they would be a good border for a garden? Maybe some kind of arts craft?Anyway, I hate to throw them out. Would love to give them to someone that can use them. They’re currently sold online for $25 for 10. Pick up only in San Francisco